Increased the file count to 16 bits when written to the object file.

Moved the input file table to a separate module and added an AddFile()
function to add files to this table.
Removed the 8 bit limit for the file number in several places (the file
number is still 8 bits in the file position structure).
Added a pseudo instruction .dbg that will be used to add debug info from
high level code to the assembler source.
Added a subkey "file" to the .dbg command that allows to add a file to the
file table that is later written to the object file.


git-svn-id: svn://svn.cc65.org/cc65/trunk@258 b7a2c559-68d2-44c3-8de9-860c34a00d81

src/ca65/scanner.h

@@ -124,6 +124,7 @@ enum Token {
     TOK_CONST,
     TOK_CPU,
     TOK_DATA,
+    TOK_DBG,
     TOK_DBYT,
     TOK_DEBUGINFO,
     TOK_DEFINE,
@@ -226,9 +227,6 @@ extern int     	ForcedEnd;		/* Force end of assembly */
 
 
 
-const char* GetFileName (unsigned char Name);
-/* Get the name of a file where the name index is known */
-
 void NewInputFile (const char* Name);
 /* Open a new input file */
 
@@ -257,9 +255,6 @@ int GetSubKey (const char** Keys, unsigned Count);
  * or -1 if the keyword was not found.
  */
 
-void WriteFiles (void);
-/* Write the list of input files to the object file */
-
 void InitScanner (const char* InFile);
 /* Initialize the scanner, open the given input file */