stdlib.h is universal as well, so there is no need to check for it.
2013-11-18  Tom Tromey  <tromey@redhat.com>
	* configure: Rebuild.
	* configure.ac: Don't check for stdlib.h
	* defs.h: Include stdlib.h unconditionally.
2013-11-18  Tom Tromey  <tromey@redhat.com>
	* configure: Rebuild.
	* configure.ac: Don't check for stdlib.h.
	* gdbreplay.c: Unconditionally include stdlib.h.
+2013-11-18  Tom Tromey  <tromey@redhat.com>
+
+       * configure: Rebuild.
+       * configure.ac: Don't check for stdlib.h
+       * defs.h: Include stdlib.h unconditionally.
+
 2013-11-18  Tom Tromey  <tromey@redhat.com>
 
        * config.in: Rebuild.
 
 # elf_hp.h is for HP/UX 64-bit shared library support.
 for ac_header in nlist.h machine/reg.h poll.h sys/poll.h proc_service.h \
                   thread_db.h \
-                 stdlib.h sys/fault.h \
+                 sys/fault.h \
                  sys/file.h sys/filio.h sys/ioctl.h sys/param.h \
                  sys/resource.h sys/procfs.h sys/ptrace.h ptrace.h \
                  sys/reg.h sys/debugreg.h sys/select.h sys/syscall.h \
 
 # elf_hp.h is for HP/UX 64-bit shared library support.
 AC_CHECK_HEADERS([nlist.h machine/reg.h poll.h sys/poll.h proc_service.h \
                   thread_db.h \
-                 stdlib.h sys/fault.h \
+                 sys/fault.h \
                  sys/file.h sys/filio.h sys/ioctl.h sys/param.h \
                  sys/resource.h sys/procfs.h sys/ptrace.h ptrace.h \
                  sys/reg.h sys/debugreg.h sys/select.h sys/syscall.h \
 
 
 /* From other system libraries */
 
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
 
 
 #ifndef atof
 
+2013-11-18  Tom Tromey  <tromey@redhat.com>
+
+       * configure: Rebuild.
+       * configure.ac: Don't check for stdlib.h.
+       * gdbreplay.c: Unconditionally include stdlib.h.
+
 2013-11-18  Tom Tromey  <tromey@redhat.com>
 
        * config.in: Rebuild.
 
   cd "$ac_popdir"
 
 
-for ac_header in sgtty.h termio.h termios.h sys/reg.h string.h                  proc_service.h sys/procfs.h linux/elf.h                 stdlib.h                errno.h fcntl.h signal.h sys/file.h malloc.h            sys/ioctl.h netinet/in.h sys/socket.h netdb.h           netinet/tcp.h arpa/inet.h
+for ac_header in sgtty.h termio.h termios.h sys/reg.h string.h                  proc_service.h sys/procfs.h linux/elf.h                 errno.h fcntl.h signal.h sys/file.h malloc.h            sys/ioctl.h netinet/in.h sys/socket.h netdb.h           netinet/tcp.h arpa/inet.h
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
 ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
 
 
 AC_CHECK_HEADERS(sgtty.h termio.h termios.h sys/reg.h string.h dnl
                 proc_service.h sys/procfs.h linux/elf.h dnl
-                stdlib.h dnl
                 errno.h fcntl.h signal.h sys/file.h malloc.h dnl
                 sys/ioctl.h netinet/in.h sys/socket.h netdb.h dnl
                 netinet/tcp.h arpa/inet.h)
 
 #if HAVE_ERRNO_H
 #include <errno.h>
 #endif
-#ifdef HAVE_STDLIB_H
 #include <stdlib.h>
-#endif
 #include <string.h>
 #include <unistd.h>
 #ifdef HAVE_NETINET_IN_H