[Win] Add flag to enable version information stamping and disable by default.

[Win] Add flag to enable version information stamping and disable by default.
https://bugs.webkit.org/show_bug.cgi?id=197249
<rdar://problem/50224412>

Reviewed by Ross Kirsling.

.:

This feature is only used in AppleWin port. Add flag for this task and make it OFF by default.
Then enable it by default on AppleWin.

* Source/cmake/OptionsWin.cmake:

Source/JavaScriptCore:

This feature is only used in AppleWin port. Add flag for this task and make it OFF by default.
Then enable it by default on AppleWin.

* CMakeLists.txt:

Source/WTF:

This feature is only used in AppleWin port. Add flag for this task and make it OFF by default.
Then enable it by default on AppleWin.

* wtf/CMakeLists.txt:

WebKitLibraries:

Modify script not to invoke SVN command if the directory for SVN doesn't exists.

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

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@244741 268f45cc-cd09-0410-ab3c-d52691b4dbfc