configure patch for hpux

[law@redhat.com]

aclocal.m4 includes code to find what options (if any) will put the host
compiler into an ANSI-like mode.

However, we do not want to go into strict ANSI mode as that turns off
useful extensions and breaks some systems's header files (almost a direct
quote from aclocal.m4).

For HPUX, using -Aa gives you an ANSI compiler, but has non-ANSI extensions
turned off.  -Ae gives you ANSI with the extensions.

Amazingly enough, this actually matters as I've personally experienced on
an hpux10.20 system with the unbundled ANSI compiler installed.

This patch to aclocal.m4 uses -Ae instead of -Aa to get ANSI+extensions
on hpux systems.

I have checked that this patch does not cause any problems on both
hpux10.20 and hpux11.00 systems, with both the bundled and unbundled
compiler.  It does fix compile-time failures when building with the 
unbundled compiler on hpux10.20.

Some time ago I stepped down as PA maintainer for GDB; so I'm not going
to install the patch until I get authorization from the GDB maintainers.

	* aclocal.m4 (proc_cc_stdc): Use -Ae, not -Aa to get ANSI+extensions
	on hpux systems.
	* configure: Rebuilt.

Index: aclocal.m4
===================================================================
RCS file: /cvs/cvsfiles/devo/gdb/aclocal.m4,v
retrieving revision 2.31
diff -c -3 -p -r2.31 aclocal.m4
*** aclocal.m4	2001/08/29 04:06:55	2.31
--- aclocal.m4	2001/12/13 05:29:22
*************** ac_save_CC="$CC"
*** 966,974 ****
  # breaks some systems' header files.
  # AIX			-qlanglvl=ansi
  # Ultrix and OSF/1	-std1
! # HP-UX			-Aa -D_HPUX_SOURCE
  # SVR4			-Xc -D__EXTENSIONS__
! for ac_arg in "" -qlanglvl=ansi -std1 "-Aa -D_HPUX_SOURCE" "-Xc 
-D__EXTENSIONS__"
  do
    CC="$ac_save_CC $ac_arg"
    AC_TRY_COMPILE(
--- 966,974 ----
  # breaks some systems' header files.
  # AIX			-qlanglvl=ansi
  # Ultrix and OSF/1	-std1
! # HP-UX			-Ae -D_HPUX_SOURCE
  # SVR4			-Xc -D__EXTENSIONS__
! for ac_arg in "" -qlanglvl=ansi -std1 "-Ae -D_HPUX_SOURCE" "-Xc 
-D__EXTENSIONS__"
  do
    CC="$ac_save_CC $ac_arg"
    AC_TRY_COMPILE(