Backport pawndisasm from Pawn 3.3.3875
Make pawndisasm display file names and line numbers
Fix Linux build error
Remove support for opcodes from newer versions of Pawn
Fix jump addresses in casetbl disassembly
Fix conditional compilation not skipping #emit directives

#emit directives inside #if ... #endif blocks were processed by the
compiler regardless of the condition.

--------- test code --------

main() {
	#if 0
		#emit halt 1
	#endif
}

----- end of test code -----
Merge tag 'pawncc-20140831' into lse