Epic JSV_NAME refactor. Remove the bit from JsVarFlags and instead add JSV_NAME_INT and JSV_NAME_STRING var types.

Later on, this will allow us to have JSV_NAME_INT_INT where we can pack both the name and value together.
clearer table
Merge branch 'master' into name_refactor

Conflicts:
	src/jsutils.h
	src/jsvar.c
	src/jsvar.h
misc fixes
Fix changeInterval regression after int32 changes
Remove JSV_NAME flag - paving the way for more efficient variable storage