Added a test to IndexModifiedTests to prove the failure identified by jagregory (cf.  http://groups.google.com/group/gitsharp/msg/fc9dd91fde9c3c03). The test fails.
Added a test to IndexModifiedTests to prove the failure identified by jagregory (cf.  http://groups.google.com/group/gitsharp/msg/fc9dd91fde9c3c03). The test fails.

henon/GitSharp,henon/GitSharp