Added a more generic way to push sources that deliver a token stream

independent of the actual input from the file. Change macro handling
to use the new input stack.
Fixed an error in FreeIf: If an unexpected .ENDIF was reached, the
assembler started an endless loop printing error messages.


git-svn-id: svn://svn.cc65.org/cc65/trunk@24 b7a2c559-68d2-44c3-8de9-860c34a00d81

src/ca65/ea.c

@@ -36,7 +36,7 @@
 #include "error.h"
 #include "expr.h"
 #include "instr.h"
-#include "scanner.h"
+#include "nexttok.h"
 #include "ea.h"