Removed unused programs and files from distribution (sources to CVS attic)
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 definition for NULL
Changes for 32-bit PC port
Changes for 32-bit PC port
Changes for 32-bit PC port
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