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/make/gcc.mak

@@ -10,9 +10,11 @@ CC	= gcc
 LDFLAGS	=
 
 OBJS =  condasm.o	\
+	dbginfo.o	\
 	ea.o	      	\
         error.o	      	\
         expr.o	      	\
+	filetab.o	\
 	fragment.o	\
         global.o       	\
 	incpath.o      	\