Added sipsimple.clients.ui module for command line interface

Ignore-this: 5c4d25e9a166ba0c696523962c0f9e90

darcs-hash:20090907155153-1e3d8-1e57d38146cd71d5f4df1958a5681e7ca2545071
Added handling in Session for streams that ended

Ignore-this: a101f4885f933ebe1709825e57c421c5

darcs-hash:20090907162919-1e3d8-0a4ec17091953ead1f99b6caf2d858f311a5463f