Ansification and prototypes.
Unix compile fixes for previous change
Added grouping parens to reduce ambiguity warnings.
Eliminated copystruct() macro, which is unnecessary in ANSI. Reduced ambiguity warnings for nested if/if/else clauses.
Changed instances of "int4" to "int32" and "int2" to "int16"
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
change clumpbeams() callback function to take clump's queue
Initial revision
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