Use C_StringLiteral for multi part string literals and C_string for each part.

Add input struct pointer to yy context object.
Returning multiple objects from meta function appends them all to program.
Meta import via read-eval-print instead of changing input file pointer.
Add treeCopy and treeCopyUnquoting functions.
Add primitive treeCopy.

C and meta have their own space rules - and --.

Makefile cleans dSYM directories.