fixes to array swapping. added equals method for PosSymbol
Merge pull request #107 from yushan87/array-fixes

fixes to array swapping. added equals method for PosSymbol
some progress on single argument facility declarations
tweaked fix for nullptr crash for modules embedded in FacilityDecs that take only a single argument.
facility declarations referencing modules that take 0 arguments should now translate to java correctly
Merge pull request #108 from Welchd1/java-enhancement-arg-fix

Java facility declaration argument fix