Integrate changes #8641,8644,8649,8654,8662,8663,8664,8665,8667,8669

Integrate changes #8641,8644,8649,8654,8662,8663,8664,8665,8667,8669
from maintperl.

Upgrade to Getopt::Long 2.25, from Johan Vromans.

more files need to be writable in the source distribution

perl_clone() wants to clone PL_numeric_radix_sv (fix for change#8626)

Solaris 2.7 i386 #defines SP in /usr/include/sys/reg.h

Subject: Re: [PATCH perl5.6.1-TRIAL2] long C<=item>s in perlmodlib.pod

Allow the float to be fuzzier.

need to use INT2PTR instead of a straight cast or ia64 fails

Subject: Re: [ID 20010201.006] bad pointer from perlfunc to perlmod

add ppaddr as one of the compatibility symbols under -DPERL_POLLUTE

p4raw-link: @8662 on //depot/maint-5.6/perl: 4fd7b88664e5220d434e86a4171b6501199a0df5
p4raw-link: @8654 on //depot/maint-5.6/perl: 570327f99599d50e7689d7f8e58ce0062abb9bfd
p4raw-link: @8649 on //depot/maint-5.6/perl: e077e268546d6372b301e6674cc72c8d19727a93
p4raw-link: @8644 on //depot/maint-5.6/perl: 0a4931cb101d4c4c7af706ed2960bc1b4935992e
p4raw-link: @8641 on //depot/maint-5.6/perl: c266a57ee93b609f48ccb9173c2a3073a28cd0db
p4raw-link: @8626 on //depot/maint-5.6/perl: e77a7f40d76565c12d43428402884505d5496c8f

p4raw-id: //depot/perl@8670
p4raw-integrated: from //depot/maint-5.6/perl@8650 'copy in'
	Porting/makerel (@7298..) lib/Getopt/Long.pm (@7895..)
	pod/perlmodlib.PL (@8175..) 'ignore' pod/perlmodlib.pod
	(@8640..) 'merge in' t/lib/peek.t (@8151..) ext/POSIX/POSIX.xs
	(@8177..) embed.pl pp.h (@8620..) embedvar.h (@8626..)
	pod/perlfunc.pod (@8630..)
p4raw-integrated: from //depot/maint-5.6/perl@8649 'merge in' sv.c
	(@8634..)