Added -n option to mkillum for multiprocessing on shared memory machine
Abstracted process and path handling for Windows. Renamed FLOAT to RREAL because of conflict on Windows. Added conditional compiles for some signal handlers.
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
made readbuf() and writebuf() retry after interrupted system call
fixed potential bug in readbuf() and writebuf() for zero requests
added vfork.h include file
updated revision number for release 2.0
Initial revision
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