beagle doesn't remove stale locks on startup

[Alec Burney <madbull gmail com>]

beagle seems not not remove its locks on the next startup after a very
unclean shutdown, meaning that once it tries to gain a lock and fails
because of the existing lock, it will stop indexing alltogether for that
session. then it will not shutdown cleanly or remove the existing lock,
meaning beagle is basically useless until you remove the lock by hand.

before:

Warn: Exception caught while executing
Beagle.Daemon.ConnectionHandler:Void HandleConnection()
Warn: System.IO.IOException: Lock obain timed
out: /home/madbull/.beagle/Indexes/FileSystemIndex/Locks/lucene-40acc3cb58f13242ebb56fd9feecc673-write.lock -- pid  -- process exists
in [0x0010e] (at /root/beagle/beagled/Lucene.Net/Store/Lock.cs:91)
Lucene.Net.Store.Lock:Obtain (Int64 lockWaitTimeout)
in [0x00039]
(at /root/beagle/beagled/Lucene.Net/Index/IndexReader.cs:547)
Lucene.Net.Index.IndexReader:AquireWriteLock ()
in [0x00014]
(at /root/beagle/beagled/Lucene.Net/Index/IndexReader.cs:576)
Lucene.Net.Index.IndexReader:Delete (Int32 docNum)
in [0x0001f]
(at /root/beagle/beagled/Lucene.Net/Index/IndexReader.cs:605)
Lucene.Net.Index.IndexReader:Delete (Lucene.Net.Index.Term term)
in [0x000a4] (at /root/beagle/beagled/LuceneIndexingDriver.cs:126)
Beagle.Daemon.LuceneIndexingDriver:Flush_Unlocked
(Beagle.Daemon.IndexerRequest request)
in [0x0000f] (at /root/beagle/beagled/LuceneIndexingDriver.cs:90)
Beagle.Daemon.LuceneIndexingDriver:Flush (Beagle.Daemon.IndexerRequest
request)
in [0x00079]
(at /root/beagle/beagled/IndexHelper/RemoteIndexerExecutor.cs:69)
Beagle.IndexHelper.RemoteIndexerExecutor:Execute (Beagle.RequestMessage
raw_request)
in [0x00232] (at /root/beagle/beagled/Server.cs:275)
Beagle.Daemon.ConnectionHandler:HandleConnection ()
in (wrapper delegate-invoke) System.MulticastDelegate:invoke_void ()
in [0x0005a] (at /root/beagle/Util/ExceptionHandlingThread.cs:54)
Beagle.Util.ExceptionHandlingThread:ThreadStarted ()


# ls .beagle/Indexes/FilesystemIndex/Locks
 lucene-0b58ff34d9f20b2c4e4d5f10dfe8bb79-write.lock
 lucene-40acc3cb58f13242ebb56fd9feecc673-write.lock

so, remove them:
# rm .beagle/Indexes/FilesystemIndex/Locks/*lock

and we come to the after:
no problem at all. beagle runs as normal again.
i would submit a patch, but i am by no means a C# programmer.

PS: this is the right place to put stuff like this, right? sorry if it's
not.