Ansification and prototypes.
Eliminated copystruct() macro, which is unnecessary in ANSI. Reduced ambiguity warnings for nested if/if/else clauses.
Replaced most outdated BSD function calls with their posix equivalents, and cleaned up a few other platform dependencies.
Abstracted process and path handling for Windows. Renamed FLOAT to RREAL because of conflict on Windows. Added conditional compiles for some signal handlers.
Changed (char *) casts for memory copies to (void *) and other fixes
Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
added number of lists for proper list deallocation
addes savestr() call to gmAddGeom() for safety
added the ability to handle quoted strings in gmNewPortal()
fixed aft clipping plane problem
changed to flat shading in gmDrawPortals()
got portals working with or without alpha buffer
added port drawing into alpha buffer mask
Initial revision
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