Completed _scanf.c, added vsscanf.c, rewrote sscanf.c.

Added an assembler include _file.inc and changed asm code that uses struct
FILE to be independent of its size.
Fixed return codes in several files to use EOF instead of -1.


git-svn-id: svn://svn.cc65.org/cc65/trunk@1205 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/common/_file.inc

@@ -0,0 +1,27 @@
+;
+; _file.inc
+;
+; (C) Copyright 2002 Ullrich von Bassewitz (uz@cc65.org)
+;
+
+; Assembler include file that makes the constants and structures in _file.h
+; available for asm code.
+
+; Struct _FILE offsets and size
+_FILE_f_fd      = $00
+_FILE_f_flags   = $01
+_FILE_size      = $02
+
+; Flags field 
+_FCLOSED        = $00
+_FOPEN          = $01
+_FEOF           = $02
+_FERROR         = $04
+_FPUSHBACK      = $08
+                     
+; Maximum number of open files (size of table)
+FOPEN_MAX       = 8
+
+; File table
+.global         __filetab
+