Use SSDATA when the context wants char *.

diff --cc src/ChangeLog
index 06600c9,aea3d94..5213669
--- 1/src/ChangeLog
--- 2/src/ChangeLog
+++ b/src/ChangeLog
@@@ -1,7 -1,14 +1,18 @@@
+ 2011-01-30  Paul Eggert  <eggert@cs.ucla.edu>
+ 
+       Use SSDATA when the context wants char *.
+       * alloc.c, buffer.c, bytecode.c, callproc.c, dired.c:
+       * dispnew.c, doc.c, editfns.c, emacs.c, fileio.c, filelock.c:
+       * fns.c, font.c, frame.c, image.c, indent.c, keyboard.c:
+       * lread.c, minibuf.c, print.c, process.c, search.c, widget.c:
+       * xdisp.c, xfaces.c, xfns.c, xml.c, xselect.c, xterm.c:
+       Use SSDATA (not SDATA) when the context of the expression wants
+       char * (not unsigned char *).
+ 
 +2011-01-30  Jan Djärv  <jan.h.d@swipnet.se>
 +
 +      * .gdbinit: Read global lisp variables as globals.f_V*.
 +
  2011-01-30  Andreas Schwab  <schwab@linux-m68k.org>
  
        * font.c (PROP_MATCH): Remove parameter N and use strlen instead.