Rewrite _hadd in assembler (a huge speedup!) and integrate it with free

for even faster code. The old _hadd function is now also written in
assembler but does only setup variables and calls the internal function
that is part of free.


git-svn-id: svn://svn.cc65.org/cc65/trunk@182 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/common/Makefile

@@ -10,7 +10,7 @@
 	@$(AS) -g -o $@ $(AFLAGS) $(*).s
 
 %.o:	%.s
-	@echo $<		 
+	@echo $<
 	@$(AS) -g -o $@ $(AFLAGS) $<
 
 C_OBJS = fclose.o fgets.o fprintf.o strdup.o calloc.o _fopen.o\
@@ -18,10 +18,11 @@ C_OBJS = fclose.o fgets.o fprintf.o strdup.o calloc.o _fopen.o\
       	 printf.o _hextab.o vfprintf.o fdopen.o strtok.o\
     	 _afailed.o fopen.o fgetc.o fputc.o puts.o gets.o perror.o getchar.o\
     	 _printf.o vprintf.o vsprintf.o sprintf.o abort.o qsort.o putchar.o\
-    	 errormsg.o _hadd.o cprintf.o vcprintf.o freopen.o locale.o
+    	 errormsg.o cprintf.o vcprintf.o freopen.o locale.o
 
 S_OBJS =	_fdesc.o	\
 		_file.o 	\
+		_hadd.o		\
 		_heap.o		\
 		_oserror.o	\
 		_stksize.o	\