fix proto

- reworked the keyboard shortcuts with Laurent (our very own Macintosh
  Usability Guidelines Expert)

- new smoothing option for jpeg output

- new small GUI dialogs for ps/pdf/jpeg/gif/msh output (makes the
  'format' menu in the file dialog much shorter)

optimize jpeg coding to produce smaller files (patch from Dave Coffin)

update new license + gl2ps 1.1.0

Prepare for commercial release

fix copyrights

Added PNG support

Indented all source files using utils/gmshindent

Some Cygwin versions seem to have broken jpeg includes

Fix configure to link with fltk_images
Remove our copy of libjpeg, and check for system-wide libjpeg
Make gl2jpg optional (compiled in only if libjpeg is available)

+ new options