Avoid sending failure reports for MSRP keep-alive chunks

Ignore-this: bece0ac51d467063c3d5a43a1467c55

darcs-hash:20140314101143-56b4d-842e288cb98f5d435f6caa685a0390553b5d9f2b
Update todo

Ignore-this: 2d8b1a66c5ff50dd248d560f228518f6

darcs-hash:20140316161621-58252-648df052838396a97fb24d7bc7ad2fffca218816
Removed unneeded configure flag

Ignore-this: 475248d5bf28f1c63ebd1188615e0677

darcs-hash:20140317123311-56b4d-71d3a7aee7ebfaa929bf7b0a77f21bd1b2e190e2