update: sdl-image 1.2.3

[Jolan Luff <jolan_(_at_)_cryptonomicon_(_dot_)_org>]

devel/sdl-image update:

http://cryptonomicon.org/ports/files/updates/patch-sdl_image

port changes:

- whitespace/order changes due to differences between old maintainer's
  style & mine.  please don't mess with them ;)
- DESCR synced w/reality

painstakingly tested on i386, macppc, sparc, & sparc64 by playing
various games that depend upon it, such as sdlzombies, oilwar

- jolan