Implement hashCode and equals for MultimapBinder.

Prevents duplicate installations when using MapBinder.permitDuplicates(), which installs a MultimapBinder every time it is called.


git-svn-id: https://google-guice.googlecode.com/svn/trunk@1555 d779f126-a31b-0410-b53b-1d3aecad763e
2 files changed