Separated the emulation features in a module.

Add a new command line option --feature that allows to set emulation
features from the command line.


git-svn-id: svn://svn.cc65.org/cc65/trunk@311 b7a2c559-68d2-44c3-8de9-860c34a00d81

src/ca65/scanner.h

@@ -236,6 +236,9 @@ void DoneInputFile (void);
 void NewInputData (const char* Data, int Malloced);
 /* Add a chunk of input data to the input stream */
 
+void LocaseSVal (void);
+/* Make SVal lower case */
+
 void UpcaseSVal (void);
 /* Make SVal upper case */