Use ' ' instead of / / for the regex in split() when preparing the different

lists of flags for exec.  ' ' is a magic value that means match all
white space, and trim leading / trailing whitespace.  Will prevent
many spurious arguments to underlying compiler.

This commit was SVN r18726.

ompi/tools/wrappers/ompi_wrapper_script.in

@@ -48,7 +48,7 @@ sub check_env {
 
 sub add_extra_includes {
     my $str = "";
-    my @includes = split(/ /, $extra_includes);
+    my @includes = split(' ', $extra_includes);
     for my $include (@includes) {
         $str .= $include_flag . $include . " ";
     }
@@ -139,17 +139,17 @@ if ($disable_flags == 1 && !($dry_run == 1 && $real_flag == 0)) {
 my @exec_argv = ();
 
 # assemble command
-push(@exec_argv, split(/ /, $comp));
+push(@exec_argv, split(' ', $comp));
 if ($want_preproc == 1) {
-    push(@exec_argv, split(/ /, $preproc_flags));
+    push(@exec_argv, split(' ', $preproc_flags));
 }
 if ($want_compile == 1) {
-    push(@exec_argv, split(/ /, $comp_flags));
+    push(@exec_argv, split(' ', $comp_flags));
 }
 push(@exec_argv, @appargs);
 if ($want_link == 1) {
-    push(@exec_argv, split(/ /, $linker_flags));
+    push(@exec_argv, split(' ', $linker_flags));
-    push(@exec_argv, split(/ /, $libs));
+    push(@exec_argv, split(' ', $libs));
 }
 
 if ($dry_run == 1) {