symtab: When initializing symtab, add literals 0 and 1 for now.
symtab: When initializing symtab, add literals 0 and 1 for now.

Eventually, there will be named constants for these values (false and true
respectively). But for now, there's this hack.

FascinatedBox/lily,FascinatedBox/lily,jesserayadkins/lily,FascinatedBox/lily,FascinatedBox/lily,jesserayadkins/lily,jesserayadkins/lily