Little fix when synching up dependencies.
Merge branches 'master' and 'master' of github.com:bower/bower
Fix absolute paths ending with / not going through the FsResolver, fixes #898.
Merge pull request #901 from bower/absolute-path-slash

Fix absolute paths ending with / not going through the FsResolver, fixes #898
Close GH-900: Merge all the decompress-zip work and add small improvements. Fixes #873, Fixes #896