Remove unnecessary alloca.h includes.

* src/keymap.c: Do not include alloca.h, config.h does that.
* src/sysdep.c: Likewise.  Do not define fwrite, not used.

src/ChangeLog

+2010-06-02  Dan Nicolaescu  <dann@ics.uci.edu>
+
+	Remove unnecessary alloca.h includes.
+	* keymap.c: Do not include alloca.h, config.h does that.
+	* sysdep.c: Likewise.  Do not define fwrite, not used.
+
 2010-06-01  Stefan Monnier  <monnier@iro.umontreal.ca>
 	* sysdep.c (child_setup_tty): Move the non-canonical initialization to

src/keymap.c

@@ -22,9 +22,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #include <config.h>
 #include <stdio.h>
 #include <setjmp.h>
-#if HAVE_ALLOCA_H
-# include <alloca.h>
-#endif
 #include "lisp.h"
 #include "commands.h"
 #include "buffer.h"

src/sysdep.c

@@ -36,9 +36,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#ifdef HAVE_ALLOCA_H
-#include <alloca.h>
-#endif /* HAVE_ALLOCA_H */
 
 #include "lisp.h"
 /* Including stdlib.h isn't necessarily enough to get srandom
@@ -61,13 +58,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #endif
 #endif /* not WINDOWSNT */
 
-/* Does anyone other than VMS need this? */
-#ifndef fwrite
-#define sys_fwrite fwrite
-#else
-#undef fwrite
-#endif
-
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <errno.h>