Update graphics/imlib2 to 1.4.7.

pkgsrc changes:
o Add LICENSE
o Remove no more needed patches and while here add a comment to all patches

Changes:
Fabian Keil (14):
      Prevent division-by-zero crashes
      imlib_conv: Use proper buffer size to prevent invalid write of size one
      loader_gif: Don't read uninitilized memory in case of invalid input
      loader_gif(): Abort gif parsing if DGifGetLine() fails
      Fix segfault when opening input/queue/id:000007,src:000000,op:flip1,pos:51 with feh
      Make IMAGE_DIMENSIONS_OK() more restrictive
      load_pnm: Deal with fread() errors consistently
      __imlib_LoadImage(): Additionally check loader_ret to detect loader failures
      loader_tga: Abort file loading if the file obviously isn't large enough
      imlib_save_image(): Check loader return code for errors
      loader_tga.c: Properly signal if decoding uncompressed BGRA data failed
      loader_tga.c: Properly signal if decoding RLE compressed data failed
      imlib_save_image_with_error_return(): Check loader return code to prevent use of unitialized memor
      load_gif: Make sure rows isn't used partly unitialized

Heiko Becker (1):
      GIF loader: Fix for libgif version 5.1

Kim Woelders (20):
      GIF loader: Fix for libgif version 5.
      Remove OS/2 support.
      Remove empty format.c/h.
      Header file cleanups.
      GIF loader: Simplify error handling.
      GIF loader: Fix segv on images without colormap.
      Revert "__imlib_LoadImage(): Additionally check loader_ret to detect loader failures"
      Revert "loader_gif(): Abort gif parsing if DGifGetLine() fails"
      JPEG loader: Fix load() return code when only reading header.
      BMP loader: Simplify pixel fetch.
      Autofoo update (AC_PROG_LIBTOOL -> LT_INIT).
      Autofoo macro cleanups (ac_->ec_).
      Change a number of internal function names.
      Indent.
      Don't include Imlib2.h indirectly via image.h.
      Remove __hidden.
      Enable visibility hiding by default.
      Indent the remaining unindented files.
      Generate a ChangeLog using git shortlog between existing tags.

Michał Górny (1):
      fix -I flags to support building out-of-source

Mike Frysinger (5):
      simplify --enable-visibility-hiding handling
      imlib2-config: delete old reference to @my_libs@
      check return value of fread/write funcs
      fix X_DISPLAY_MISSING redefined warnings when X is disabled
      do not link with X libs when X is disabled

(leot)