Default nil or empty version string to CFBundleVersion
Default nil or empty version string to CFBundleVersion

git-svn-id: 7939527bf0a06ad24ad020f729d5600cb42ed5d7@1470 4c0a9323-5329-0410-9bdc-e9ce6186880e

bittorrent/breakpad,bittorrent/breakpad,bittorrent/breakpad,bittorrent/breakpad,bittorrent/breakpad,bittorrent/breakpad,bittorrent/breakpad