Merge: Check return values of some library calls.

diff --cc src/ChangeLog
index 06b9e31,c717b3f..fbc1b21
--- 1/src/ChangeLog
--- 2/src/ChangeLog
+++ b/src/ChangeLog
@@@ -1,6 -1,11 +1,11 @@@
  2011-01-23  Paul Eggert  <eggert@cs.ucla.edu>
  
 -      * image.c (x_create_bitmap_from_xpm_data): Add cast to fix type clash
+       Check return values of some library calls.
+       * emacs.c (main): Check dup result.
+       * frame.c: Include <limits.h>, for INT_MIN and INT_MAX.
+       (frame_name_fnn_p): Check strtol result.
+ 
 +      * image.c (x_create_bitmap_from_xpm_data): Add cast to fix type clash
        when calling XpmCreatePixmapFromData.
  
        Promote SSDATA macro from gtkutil.c and xsmfns.c to lisp.h.