Tools: [Win] Extend auto-version.pl to support 5-tuple versions

Tools: [Win] Extend auto-version.pl to support 5-tuple versions
https://bugs.webkit.org/show_bug.cgi?id=135124
<rdar://problem/17750334>

Reviewed by David Kilzer.

Add test cases for auto-version.pl.

* Scripts/webkitperl/auto-version_unittest: Added.
* Scripts/webkitperl/auto-version_unittest/autoVersionTests.pl: Added.

WebKitLibraries: [Win] Extend auto-version.pl to handle 5-tuple versions
https://bugs.webkit.org/show_bug.cgi?id=135124
<rdar://problem/17750334>

Reviewed by David Kilzer.

Extend tuple parsing to handle up to five tuples, and as
few as a single tuple. On Windows, the two additional
tuples are unused.

Also corrected regular expression capture logic to use local
blocks, preventing later capture expressions from reusing
previous capture results when the current expression failed
to find a match (GRRR, Perl!).

Clean up code by putting logic into a couple of subroutines.

* win/tools/scripts/auto-version.pl:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@171319 268f45cc-cd09-0410-ab3c-d52691b4dbfc