Log Message:
GraphicsMagick: updated to 1.3.29

1.3.29:
Security Fixes:
GraphicsMagick is now participating in Google's oss-fuzz project due to the \ 
contributions and assistance of Alex Gaynor. Since February 4 2018, 180 issues \ 
have been opened by oss-fuzz and 173 of those issues have been resolved. The \ 
issues list is available at https://bugs.chromium.org/p/oss-fuzz/issues/list \ 
under search term "graphicsmagick". Issues are available for anyone to \ 
view and duplicate if they have been in "Verified" status for 30 days, \ 
or if they have been in "New" status for 90 days. There are too many \ 
fixes to list here. Please consult the GraphicsMagick ChangeLog file, Mercurial \ 
repository commit log, and the oss-fuzz issues list for details.
JNG: Require that the embedded JPEG image have the same dimensions as the JNG \ 
image as provided by JHDR. Avoids a heap write overflow.
MNG: Arbitrarily limit the number of loops which may be requested by the MNG \ 
LOOP chunk to 512 loops, and provide the '-define mng:maximum-loops=value' \ 
option in case the user wants to change the limit. This fixes a denial of \ 
service caused by large LOOP specifications.

Bug fixes:
Many oss-fuzz fixes are bug fixes.
DICOM: Pre/post rescale functions are temporarily disabled (until the \ 
implementation is fixed).
JPEG: Fix regression in last release in which reading some JPEG files produces \ 
the error "Improper call to JPEG library in state 201".
ICON: Some DIB-based Windows ICON files were reported as corrupt to an \ 
unexpectedly missing opacity mask image.
In-memory Blob I/O: Don't implicitly increase the allocation size due to seek \ 
offsets.
MNG: Detect and handle failure to allocate global PLTE. Fix divide by zero.
DrawGetStrokeDashArray(): Check for failure to allocate memory.
BlobToImage(): Now produces useful exception reports to cover the cases where \ 
'magick' was not set and the file format could not be deduced from its header.

API Updates:
Wand API: Added MagickIsPaletteImage(), MagickIsOpaqueImage(), \ 
MagickIsMonochromeImage(), MagickIsGrayImage(), MagickHasColormap() based on \ 
contributions by Troy Patteson.
New structure ImageExtra added and Image 'clip_mask' member is replaced by \ 
'extra' which points to private ImageExtra allocation. The ImageGetClipMask() \ 
function now provides access to the clip mask image.
New structure DrawInfoExtra and DrawInfo 'clip_path' is replaced by 'extra' \ 
which points to private DrawInfoExtra allocation. The DrawInfoGetClipPath() \ 
function now provides access to the clip path.
New core library functions: GetImageCompositeMask(), CompositeMaskImage(), \ 
CompositePathImage(), SetImageCompositeMask(), ImageGetClipMask(), \ 
ImageGetCompositeMask(), DrawInfoGetClipPath(), DrawInfoGetCompositePath()
Deprecated core library functions: RegisterStaticModules(), \ 
UnregisterStaticModules().

Feature improvements:
Static modules (in static library or shared library without dynamically loadable \ 
modules) are now lazy-loaded using the same external interface as the \ 
lazy-loader for dynamic modules. This results in more similarity between the \ 
builds and reduces the fixed initialization overhead by only initializing the \ 
modules which are used.
SVG: The quality of SVG support has been significantly improved due to the \ 
efforts of Greg Wolfe.
FreeType/TTF rendering: Rendering fixes for opacity.