integrate changes#3105,3130,3154 from maint-5.005
p4raw-link: @3154 on //depot/maint-5.005/perl:
60a22511b32234c359f6a1235f7273a596f8edcb
p4raw-link: @3130 on //depot/maint-5.005/perl:
08c9aea58d52024cd45844ac23e957399bbc0340
p4raw-link: @3105 on //depot/maint-5.005/perl:
412383e48358b00907bbb438802caa8caf7f67cf
p4raw-id: //depot/perl@3158
p4raw-integrated: from //depot/maint-5.005/perl@3157 'ignore' Configure
(@3057..) 'merge in' hints/dec_osf.sh (@2702..) hints/netbsd.sh
(@2714..) INSTALL (@3059..)