Moved declarations and definitions for header.c from resolu.h to rtio.h
Created MAXFMTLEN to guard against buffer overrun attacks in header input
Changed ".pic" extension to ".hdr" throughout
Continued ANSIfication, and other fixes and clarifications.
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
moved input file initialization into main() for Linux non-constant stdin
Initial revision
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