integrate cfgperl changes into mainline

p4raw-id: //depot/perl@2318

diff --cc perl.h
index a584148,ca8973e..101c316
--- 1/perl.h
--- 2/perl.h
+++ b/perl.h
@@@ -2178,6 -2185,6 +2185,40 @@@ enum {         /* pass one of these to get_vtb
      want_vtbl_regdatum
  };
  
++enum {                /* pass one of these to get_vtbl */
++    want_vtbl_sv,
++    want_vtbl_env,
++    want_vtbl_envelem,
++    want_vtbl_sig,
++    want_vtbl_sigelem,
++    want_vtbl_pack,
++    want_vtbl_packelem,
++    want_vtbl_dbline,
++    want_vtbl_isa,
++    want_vtbl_isaelem,
++    want_vtbl_arylen,
++    want_vtbl_glob,
++    want_vtbl_mglob,
++    want_vtbl_nkeys,
++    want_vtbl_taint,
++    want_vtbl_substr,
++    want_vtbl_vec,
++    want_vtbl_pos,
++    want_vtbl_bm,
++    want_vtbl_fm,
++    want_vtbl_uvar,
++    want_vtbl_defelem,
++    want_vtbl_regexp,
++    want_vtbl_collxfrm,
++    want_vtbl_amagic,
++    want_vtbl_amagicelem,
++#ifdef USE_THREADS
++    want_vtbl_mutex,
++#endif
++    want_vtbl_regdata,
++    want_vtbl_regdatum
++};
++
  
                                /* Note: the lowest 8 bits are reserved for
                                   stuffing into op->op_private */

diff --cc pod/perlfaq4.pod
index 633f5f1,aa6b6a5..39325c2
--- 1/pod/perlfaq4.pod
--- 2/pod/perlfaq4.pod
+++ b/pod/perlfaq4.pod
@@@ -1326,7 -1326,7 +1326,7 @@@ The Data::Dumper module on CPAN is nic
  data structures, and FreezeThaw for copying them.  For example:
  
      use FreezeThaw qw(freeze thaw);
--    $new = thaw freeze $old;
++    ($new) = thaw freeze $old;
  
  Where $old can be (a reference to) any kind of data structure you'd like.
  It will be deeply copied.

diff --cc t/op/filetest.t
index 13c5917,9228b57..9228b57
mode 100755,100644..100755
--- 1/t/op/filetest.t
--- 2/t/op/filetest.t
+++ b/t/op/filetest.t