Resync with mainline

p4raw-id: //depot/vmsperl@5269

diff --cc av.c
Simple merge

diff --cc configure.com
Simple merge

diff --cc installperl
Simple merge

diff --cc perlapi.c
index 0f20e54,e26f9f1..e26f9f1
mode 100755,100644..100755
--- 1/perlapi.c
--- 2/perlapi.c
+++ b/perlapi.c

diff --cc perlapi.h
index 0dac61a,8ba6504..8ba6504
mode 100755,100644..100755
--- 1/perlapi.h
--- 2/perlapi.h
+++ b/perlapi.h

diff --cc pp_sys.c
Simple merge

diff --cc scope.c
Simple merge