Added gethomedir.c and various compatibility fixes.
winsocket.h include for gethostname() on Windows.
Added prototypes and includes from patch by Randolph Fritz. Added more required includes and reduced other compile warnings.
Moved some more platform dependencies to common header files. Included a few necessary system headers.
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
Initial revision
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