Log Message:
Update GraphicsMagick to 1.1.12.

Significant changes associated with GraphicsMagick 1.1.12 (released April 28, 2008)

  Security Fixes:

    o Do not access X11 or invoke convenience or stealth delegate
      programs based on the file extension. In particular, these file
      extensions are rejected for consideration as a format specifier:
      'autotrace', 'browse', 'dcraw', 'edit', 'gs-color',
      'gs-color+alpha', 'gs-gray', 'gs-mono', 'launch', 'mpeg-encode',
      'print', 'scan', 'show', 'win', 'xc', and 'x'.

  Bugs Fixed:

    o magick/effect.c: Should now compile for ARM CPU.

    o TIFF: Don't request Kodak private tags since these cause some
      versions of libtiff to misbehave.

    o When performing string expansion of image attribute identifiers, skip
      those which require access to image pixels if image pixels are not
      present.

    o CropImageToHBITMAP(), ImageToHBITMAP(): Fix leak of bitmap handle.