Changed rcalc and icalc to search RAYPATH for input *.cal files
Fixed check of absolute paths for frlibopen() under Windows
Minor improvements
Added prototypes and includes from patch by Randolph Fritz. Added more required includes and reduced other compile warnings.
Removed stray strcpy() declarations
Replaced most outdated BSD function calls with their posix equivalents, and cleaned up a few other platform dependencies.
Changed (char *) casts for memory copies to (void *) and other fixes
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
changed fropen() call to frlibopen()
changed extern *libpath to extern *getlibpath()
modified testing of DIRSEP to allow multiple possible values
added paths.h file to define DIRSEP and the like
added macros for directory and path separation characters
added escape character
updated revision number for release 2.0
made libpath global so it could be set before call
Initial revision
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