Changed back to old queuing behavior
Created stub routines as placeholder for Windows version of raypcalls
Fixed potential bug where send queue gets jammed in ray_pqueue()
Eliminated unnecessary call to select(2) for single process
Added check for parent process to close children before exit
Minor cosmetic changes
Added ambient file synchronization and minor fixes
Fixed bug in reading of ray buffers
Extensive changes to enable rtrace -oTW option for tracking ray contributions
Eliminated revf member from RAY struct, as it was never really needed
Added close-on-exec flag to pipes to prevent possible deadlocks
Added -n option to mkillum for multiprocessing on shared memory machine
Fixed up comments in header
Continued ANSIfication. There are only bits and pieces left now.
Added grouping parens to reduce ambiguity warnings.
Eliminated copystruct() macro, which is unnecessary in ANSI. Reduced ambiguity warnings for nested if/if/else clauses.
Added -N option to rad for parallel rendering (preliminary w/o using -PP)
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
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