Skip Cocoa's options in wxCmdLineParser on OS X

Skip Cocoa-specific flags used by Xcode (such as -AppleLanguages) on OS
X when parsing the command line. They all take a single argument, so
skip both the flag and the following value in the argv list.

Also fix handling of -ApplePersistenceIgnoreState, which didn't skip the
value as it should.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_3_0_BRANCH@78172 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775