libchill, libf2c, libobjc:

        * configure.in (AC_PREREQ): Update to 2.13.
        (AC_EXEEXT): Call to find possible file extension.
        (compiler_name): Use.
        * configure: Regenerate.
libio, libstdc++
        * configure.in: Test for ${compiler_name}.exe as well.

From-SVN: r27050
diff --git a/libobjc/configure.in b/libobjc/configure.in
index 619ba32..821dcd2 100644
--- a/libobjc/configure.in
+++ b/libobjc/configure.in
@@ -36,11 +36,6 @@
 dnl that install-sh and config.sub get found.
 AC_CONFIG_AUX_DIR($topsrcdir)
 
-# We have to handle 3 cases -- native, cross and canadian cross -- and
-# the extension returned from this macro needs to be treated as a possible
-# scenario and not the only one.
-AC_EXEEXT
-
 # If the language specific compiler does not exist, but the "gcc" directory 
 # does, we do not build anything. Note, $r is set by the top-level Makefile.
 # Note that when we look for the compiler, we search both with and without
@@ -53,7 +48,7 @@
 if test -n "$r"; then
   if test -d "$r"/gcc; then
     if test -f "$r"/gcc/$compiler_name \
-       || test -f "$r"/gcc/$compiler_name$EXEEXT; then
+       || test -f "$r"/gcc/$compiler_name.exe; then
       true
     else
       objc_cv_compiler_exists=no