integrate cfgperl changes into mainline

p4raw-id: //depot/perl@3267

diff --cc config_h.SH
Simple merge

diff --cc pod/perlre.pod
index 97ac7b7,97ac7b7..95d4734
--- 1/pod/perlre.pod
--- 2/pod/perlre.pod
+++ b/pod/perlre.pod
@@@ -28,7 -28,7 +28,7 @@@ locale.  See L<perllocale>
  
  Treat string as multiple lines.  That is, change "^" and "$" from matching
  at only the very start or end of the string to the start or end of any
--line anywhere within the string,
++line anywhere within the string.
  
  =item s