Allow single underscore as method / block argument and temporaries
This commit is a follow up for 38b221e.
notes
makefile
libcomp.*
.svnversion
.listOfSTfiles
.dependencies
*.H
*.STH
*.exp
*.obj
*.dll
*.lib
*.ilk
*.pdb
*.sbr
*.c
*.sc
*.xc
so_locations
classList.stc
objbc
objvc
objlcc
objtcc
objmingw
*.@@@
*.res
*.RES