Resolve regression in MM_Unix.pm

Reported as https://github.com/Perl-Toolchain-Gang/ExtUtils-MakeMaker/issues/96

Signed-off-by: Chris 'BinGOs' Williams <chris@bingosnet.co.uk>
Release engineering for v6.93_01
Release engineering for v6.94
Make MIN_PERL_VERSION handle v-strings properly
Release engineering for v6.95_01
Work around v5.10.1 for the MIN_PERL_VERSION v-string handling
Release engineering for v6.95_02
Release engineering for v6.96
Resolve another regression related to not recursing into distdirs

We'll see if it's a distdir by looking for a version number on the
end too, with v?[\d\.], which should match sane version numbers.

I've got 99 problems, but your fucked up version numbering ain't one of them
Release engineering for v6.97_01
Remove redundant File::Spec check from Makefile.PL
Release engineering for v6.97_02
Release engineering for v6.98
clarify the use and limitations of META_ADD, META_MERGE
Disregard some warnings during tests when cross-compiling

Previously, tests would fail in cross-compilation builds of perl
because of warnings ala this:

    Warning (mostly harmless): No library found for -lm

This happens because target systems usually have a very limited
selection of libraries to speak of.

This commit has the tests ignore those warnings on a cross-compiled
perl.
Merge pull request #100 from Perl-Toolchain-Gang/topic/docs_201405

clarify the use and limitations of META_ADD, META_MERGE
Backport core change for ExtUtils::Install pm_to_blib
Release engineering for v6.99_01
No longer warn on failed evals in parse_version()
Release engineering for v6.99_02