Add a couple of Libtool tweaks for Sun Studio compatibility:

* Use the (undocumented) `solaris_use_stlport4` libtool variable to
   turn off any Cstd/stlport4 linkage. This allows Open MPI to be C++
   STL agnostic.
 * Patch `config/libtool.m4` in autogen.sh for a bug in Libtool's
   detection of the Sun Studio Fortran compiler. See the below e-mail
   thread for more details:
   http://www.open-mpi.org/community/lists/devel/2008/11/4920.php

This commit was SVN r20036.

autogen.sh

@@ -541,6 +541,12 @@ EOF
             aclocal.m4 > aclocal.m4.new
         cp aclocal.m4.new aclocal.m4
         rm -f aclocal.m4.new
+
+        # This patch fixes a bug in Libtool's detection of the Sun Studio
+        # Fortran compiler. See the below e-mail thread for more details:
+        #   http://www.open-mpi.org/community/lists/devel/2008/11/4920.php
+        echo "   ++ patching for Sun Studio Fortran compilers"
+        patch -N -p0 < config/lt-sun-fortran.diff > /dev/null 2>&1
     fi
 
     run_and_check $ompi_autoconf

config/lt-sun-fortran.diff

@@ -0,0 +1,26 @@
+--- config/libtool.m4.orig
++++ config/libtool.m4
+@@ -3947,17 +3947,17 @@ m4_if([$1], [CXX], [
+ 	;;
+       *)
+ 	case `$CC -V 2>&1 | sed 5q` in
+-	*Sun\ C*)
+-	  # Sun C 5.9
++	*Sun\ F* | *Sun*Fortran*)
++	  # Sun Fortran 8.3 passes all unrecognized flags to the linker
+ 	  _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ 	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+-	  _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
++	  _LT_TAGVAR(lt_prog_compiler_wl, $1)=''
+ 	  ;;
+-	*Sun\ F*)
+-	  # Sun Fortran 8.3 passes all unrecognized flags to the linker
++	*Sun\ C*)
++	  # Sun C 5.9
+ 	  _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
+ 	  _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
+-	  _LT_TAGVAR(lt_prog_compiler_wl, $1)=''
++	  _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ 	  ;;
+ 	esac
+ 	;;

configure.ac

@@ -1092,6 +1092,12 @@ CFLAGS="$CFLAGS_save"
 
 ompi_show_subtitle "Libtool configuration"
 
+# Use the undocumented solaris_use_stlport4 libtool variable to turn off any
+# Cstd/stlport4 linkage. This allows Open MPI to be C++ STL agnostic.
+if test "x$ompi_cv_c_compiler_vendor" = "xsun"; then
+    solaris_use_stlport4="yes"
+fi
+
 dnl Not all versions of LT set the PACKAGE_VERSION
 m4_ifdef([LT_PACKAGE_VERSION], [], [m4_define([LT_PACKAGE_VERSION], [1.5.22])])