Don't use vendor name by default in wxStandardPaths.

Don't use vendor name by default in wxStandardPaths.

The changes in r50025 made the behaviour of wxStandardPaths silently
incompatible with the previous versions under MSW and OS X as it now used the
vendor name in the paths it returned, unlike before. The benefits of doing
this don't justify silently breaking the existing programs so revert this
change and continue to use the application name only by default.

It is, of course, still possible to explicitly ask for the vendor name to be
used with wxStandardPaths::UseAppInfo().

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62360 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775