Log Message:
Update OpenSCAD to 2015.03p2

from the release notes:

  # OpenSCAD 2015.03

    **Language Features:**
    * Added text() module for 2D text
    * Added offset() module for 2D offsets
    * Added list comprehensions and let()
    * Added concat() function
    * Added chr() function
    * surface() can now take PNG images as input
    * min() and max() can now take a vector argument
    * 2D minkowski can now handle polygons with holes
    * Variables can now be assigned in local blocks without using assign()

    **Program Features:**
    * Added Toolbar icons
    * New code editor based on QScintilla
    * Added Splash screen
    * Added SVG export
    * Added AMF export
    * Added --viewall and --autocenter cmd-line parameters
    * GUI is now translated into German, Czech, Spanish, French and Russian
    * MDI (Multiple Document Interface) is now available on all platforms
    * Color schemes for viewer and editor can be user-edited using JSON files
    * GUI components are now dockable
    * Added Tickmarks on axes

    **Bugfixes/improvements:**
    * Performance improvement: 2D (clipper), preview, hull, minkowski, surface
    * Performance improvement: Reduce duplicate evaluation of identical expressions
    * Better recursion behavior
    * STL export and import is now more robust
    * Internal cavities are better supported
    * New examples
    * Windows cmd-line behaves better
    * Better mirror() and scale() behavior when using negative factors

    **Deprecations:**
    * polyhedron() now takes a faces= argument rather than triangles=
    * assign() is no longer needed. Local variables can be created in any scope

  # OpenSCAD 2014.03

    **Language Features:**
    * Added diameter argument: circle(d), cylinder(d, d1, d2) and sphere(d)
    * Added parent_module() and $parent_modules
    * Added children() as a replacement for child()
    * Unicode strings (using UTF-8) are now correctly handled
    * Ranges can have a negative step value
    * Added norm() and cross() functions

    **Program Features:**
    * Cmd-line: --info parameter prints system/library info
    * Cmd-line: --csglimit parameter to change CSG rendering limit
    * Cmd-line: Better handling of cmd-line arguments under Windows
    * GUI: Added Reset View
    * GUI: Added Search&Replace in editor
    * GUI: Syntax highlighting now has a dark background theme
    * GUI: We now create a backup file before rendering to allow for recovery if \ 
OpenSCAD crashes/freezes
    * GUI: Accessibility features enabled (e.g. screenreading)

    **Bugfixes/improvements:**
    * Reading empty STL files sometimes caused a crash
    * OPENSCADPATH now uses semicolon as path separator under Windows
    * polyhedron() is now much more robust handling almost planar polygons
    * Automatic reloads of large designs are more robust
    * Boolean logic in if() statements are now correctly short-circuited
    * rands() with zero range caused an infinite loop
    * resize(, auto=true) didn't work when shrinking objects
    * The $children variable sometimes misbehaved due to dynamic scoping
    * The --camera cmd-line option behaved differently then the corresponding \ 
GUI function
    * PNG export now doesn't leak transparency settings into the target image
    * Improved performance of 3D hull() operations
    * Some editor misbehaviors were fixed
    * Stability fixes of CGAL-related crashes
    * Windows cmd-line can now handle spaces in filenames
    * Default CSG rendering limit is now 100K elements
    * Fixed a crash reading DXF files using comma as decimal separator
    * Fixed a crash running the cmd-line without a HOME env. variable
    * Intersecting something with nothing now correctly results in an empty object

    **Deprecations:**
    * child() is no longer supported. Use children() instead.
    * polyhedron(triangles=[...]): Use polyhedron(faces=[...]) instead.

    **Misc:**
    * Test framework now shares more code with the GUI app
    * Test report can now be automatically uploaded to dinkypage.com
    * Better compatibility with BSD systems
    * Qt5 support

  # OpenSCAD 2013.06

    **Language Features:**
    * linear_extrude now takes a scale parameter:
      linear_extrude(height=a, slices=b, twist=c, scale=[x,y])
    * Recursive use of modules is now supported (including cascading child() \ 
operations):
      https://github.com/openscad/openscad/blob/master/examples/example024.scad
    * Parameter list values can now depend on earlier values, e.g. for (i=[0:2], \ 
j=[0:i]) ..
    * value assignments in parameters can now depend on already declared parameters
    * Added resize() module:
      http://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Transformations#resize

    **Program Features:**
    * Added basic syntax highlighting in the editor
    * There is now a built-in library path in user-space:
      http://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Libraries#Library_Locations
    * Commandline output to PNG, with various camera and rendering settings.
      Run openscad -h to see usage info or see the OpenSCAD wiki user manual.
    * Attempting to open dxf, off or stl files in the GUI will now create an \ 
import statement.
    * The preview operator (%) will now preserve any manually set color
    * The highlight operator (#) will now color the object in transparent red
    * Mac: Added document icon
    * Mac: Added auto-update check
    * Windows: Better cmd-line support using the openscad.com executable

    **Bugfixes:**
    * Importing files is now always relative to the importing script, also for \ 
libraries
    * We didn't always print a warning when CSG normalization created too many \ 
elements
    * Binary STLs can now be read on big endian architectures
    * Some binary STLs couldn't be read
    * Fixed some issues related to ARM builds
    * CGAL triangulation more lenient- enables partial rendering of 'bad' DXF data
    * The Automatic Reload feature is now more robust
    * If a file couldn't be saved it no longer fails silently
    * Fixed a number of crashes related to CGAL and OpenCSG rendering or complex \ 
models
    * The lookup() function had bad boundary condition behavior
    * The surface() module failed when the .dat file lacked a trailing newline
    * The hull() module could crash if any of the children were empty objects
    * Some problems using unicode filenames have been fixed

    **Misc:**
    * Build scripts have been further improved
    * Regression test now creates single monolithic .html file for easier uploading
    * Regression test auto-starts & stops Xvfb / Xvnc if on headless unix machine
    * The backend is finally independent of Qt
    * Windows: We now have a 64-bit version

    **Known Bugs:**
    * Linux: command-line png rendering on Gallium is flaky.
      Workaround: use CGAL --render or hardware rendering.

  # OpenSCAD 2013.01

    **Features:**
    * Snappier GUI while performing CGAL computations (computations running in \ 
separate thread)
    * The size of the misc. caches can now be adjusted from Preferences
    * The limit for when to disable OpenCSG can now be adjusted from Preferences
    * Added Dot product operator: vec * vec
    * Added Matrix multiplication operator: vec * mat, mat * mat
    * Added search() function
    * Dependencies are now tracked - any changes in uses/included files will be \ 
detected and cause a recompile
    * The OPENSCADPATH environment variable is now implemented will have \ 
precedence when searching for libraries
    * .csg files can now be opened from the GUI
    * linear_extrude() will now assume that the first parameter means 'height' \ 
if it's a number

    **Bugfixes:**
    * use'ing an non-existing file sometimes crashed under Windows
    * Better font handling: Ensure a monospace font is chosen as default
    * Division by zero caused hang in some cases (e.g. sin(1/0))
    * Larger minkowski operations sometimes caused a crash after a CGAL assert \ 
was thrown
    * Fixed crashes in shared_ptr.hpp (or similar places) due bugs in cache \ 
management and CSG normalization
    * scale() with a scale factor of zero could cause a crash
    * Fixed a number of issues related to use/include
    * Providing an unknown parameter on the cmd-line caused a crash
    * cmd-line overrides using -D now also work for USEd modules
    * Modifier characters can now be used in front of if statements
    * rotate() with a vector argument with less that 3 elements used \ 
uninitialized variables, ending up being non-deterministic.
    * .csg files will now have relative filenames whenever possible
    * Don't just ignore geometric nodes having zero volume/area - when doing \ 
difference/intersection, they tend to turn negative objects into positive ones.
    * Always use utf-8 file encoding, also under Windows
    * A lot of build script fixes
    * Some other crash bugs fixes

    **Deprecations:**
    * The old include syntax "<filename.scad>" without the \ 
include keyword is no
      longer supported and will cause a syntax error.