Install section 3 manpages to .../share/man for consistency

When an admin installs git site-wide, e.g. to /usr/local, perl's makemaker
decides to use 'site' mode (as opposed to distro or user mode). For whatever
reason, it then installs all perl-related manpages (those in section 3) to
.../man, while the rest of git happily installs manpages to .../share/man.

In as such, this is different from the patch proposed in this thread:
  http://marc.info/?t=117862141100003&r=1&w=2

My patch should only ever affect site installs and does not cause
installations to $HOME to go to $HOME/share/...

MakeMaker supports three installation modes: perl, site, and vendor. The first
and third install manpages to $PREFIX/share/man, only site installs to
$PREFIX/man. For consistency with the rest of git, which does not make the
distinction and writes all manpages to $PREFIX/share/man, this change makes
sure that perl does too, even when it's installed in site mode.

Signed-off-by: martin f. krafft <redacted>
---
 perl/Makefile.PL |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/perl/Makefile.PL b/perl/Makefile.PL
index 4375161..6aecd89 100644
--- a/perl/Makefile.PL
+++ b/perl/Makefile.PL

@@ -29,5 +29,6 @@ WriteMakefile(
 	VERSION_FROM    => 'Git.pm',
 	PM		=> \%pm,
 	MAKEFILE	=> 'perl.mak',
+	INSTALLSITEMAN3DIR => '$(SITEPREFIX)/share/man/man3',
 	%extra
 );

-- 
1.5.3.rc5.40.g2f82