Improve error message
Sync with rpf
No need to have omxSymbolTable.cpp & omxSymbolTable.h in the repository, because they get created from omxSymbolTable.tab during build.
"p2z" is a less misleading name than "qnorm".
Implement qnorm() and lgamma() in mxAlgebras.
Revert accidental changes, and re-do correct changes.
Add limited WLS documentation for mxData.
Hide annoying setFreeVarGroup warning unless OMX_DEBUG
Fix array indexing of ordinal thresholds
Revert "Add another check for missing thresholds"