Broke standard.h into rtio.h, rterror.h, rtmath.h, and rtmisc.h
Abstracted process and path handling for Windows. Renamed FLOAT to RREAL because of conflict on Windows. Added conditional compiles for some signal handlers.
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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 definition of EPSILON to FTINY
updated revision number for release 2.0
Initial revision
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