Minor fixes
Continued ANSIfication, and reduced other compile warnings.
Eliminated CPM, MAC, and UNIX conditional compiles.
Compile fixes for "special" target on Linux.
Removed malloc.h includes and renamed mergesort() to pmergesort()
Reduced compile warnings/errors on Windows.
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
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