feat(rpict,rtrace,rvu,rxpict,rxtrace,rxpiece): Added -e expr and -f file.cal options
fix(rxpiece,rxpict): Make sure child processes are waited for
perf(rxpiece,rxcontrib): Don't bother to free data structs on exit
fix(rxpiece): Match defaults to rpict
perf(rxtrace,rxpict,rxpiece,rxcontrib): Improved exit strategy in children
fix(rxpiece): Eliminate spurious warnings
perf(rxpiece): Improved flushing and cleanup operations
feat(rxpiece): Additional error diagnostics
fix(rxpiece): forgot to increment tile finished counter
fix(rxpiece): Was trying to fix pixel aspect ratio and complaining
feat(rxpiece): Initial working version of rxpiece C++ tiling renderer
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