WyRL: working through some simple refactorings which could improve performance of automata operations.  This is after fixing #374, as I spotted some opportunities.
WyRL: working through some simple refactorings which could improve performance of automata operations.  This is after fixing #374, as I spotted some opportunities.

hjwylde/whiley-compiler,hjwylde/whiley-compiler,Whiley/WhileyCompiler,hjwylde/whiley-compiler,hjwylde/whiley-compiler,hjwylde/whiley-compiler