Adjust the meta-package sizes that are displayed in the AppCafe.
1) If the meta-pkg is installed, it will use the combined sizes of all the direct dependencies of the meta-pkg (giving a better idea of the amount of space that might be saved if it is removed).
2) If the meta-pkg is not installed: Add up the sizes of all the uninstalled dependencies (the entire dep tree) - giving a good idea of the amount of data that will need to be downloaded to install the meta-pkg.
Merge branch 'master' of github.com:pcbsd/pcbsd