Replaced inline copyright notice with #include "copyright.h"
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 conditional use of getwd() or getcwd()
changed temporary directory for DOS to CWD
fixed incorrect template length for UNIX
changed default temp directory to /usr/tmp under UNIX
Changes for 32-bit PC port
Changes for PC port
modified testing of DIRSEP to allow multiple possible values
Initial revision
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