Log Message:
{p5-}GraphicsMagick: Update to 1.3.33

1.3.33 (July 20, 2019)
==========================

Special Issues:

* It has been discovered that the 'ICU' library (a perhaps 30MB C++
  library) which is now often a libxml2 dependendency causes huge
  process initialization overhead.  This is noticed as unexpected
  slowness when GraphicsMagick utilities are used to process small to
  medium sized files.  The time to initialize is often longer than the
  time to read the input file, process the image, and write the output
  file.  If the 'ICU' dependency can not be avoided, then make sure to
  use the modules build.  Please lobby the 'ICU' library developers to
  change their implementation to avoid long start-up times due to
  merely linking with the library.

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, 353 issues have been opened by oss-fuzz and 338 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.

* Documentation has been added regarding security hazards due to
  commands which support a '@filename' syntax.

* MontageImages(): Fix wrong length argument to strlcat() when
  building montage directory, which could allow heap overwrite.

Bug fixes:

* PNG: Pass correct size value to strlcat() in module registration
  code.  This bug is noticed to cause problems for Apple's OS X and
  Linux Alpine with musl libc.  This fixes a regression introduced by
  the 1.3.32 release.

* Re-implement command-line utility `'@'` file inclusion support for
  `-comment`, `-draw`, `-format`, and `-label` which was removed for
  the 1.3.32 release.  The new implementation is isolated to
  command-line utility implementation code rather than being deeply
  embedded in the library and exposed in other usage contexts.  This
  fixes a regression introduced by the 1.3.32 release.

* CAPTION: The The CAPTION reader did not appear to work at all any
  more.  Now it works again, but still not very well.

* MagickXDisplayImage(): Fix heap overwrite of windows->image.name and
  windows->image.icon_name buffers.  This bug has surely existed since
  early GraphicsMagick releases.

* MagickXAnimateImages(): Fix memory leak of scene_info.pixels.

* AcquireTemporaryFileDescriptor(): Fix compilation under Cygwin. This
  fixes a regression introduced by the 1.3.32 release.

* PNG: Fix saving to palette when mage has an alpha channel but no
  color is marked as transparent.

* Compilation warnings in the Visual Studio WIN64 build due to the
  'long' type being only 32-bits have been addressed.

New Features:

* None

API Updates:

* None

Feature improvements:

* None

Windows Delegate Updates/Additions:

* None

Build Changes:

* None

Behavior Changes:

* Support for `'@'` file inclusion support for `-comment`, `-draw`,
  `-format`, and `-label` has been restored.