Fix typo in ChangeLogLevel Macro
Prepare for 0.10.0
Adds ability to set optional HTTP headers in requests made during replication.

Allows one to set optional HTTP headers for replication during the configuration
of the CDTPull/PushReplication objects.

Fixes a bug in TD_DatabaseManager.m that prevented headers to be set via
the 'properties' NSDictionary object used to create TDReplicator objects.

This commit is not complete -- still need more tests.
Adds tests for HTTP requests

ReplicatorURLProtocol inherits from NSURLProtocol and is
a registered URL request in order to gain access to all
NSURLRequests made during replication.
This class does not manipulate or handle the HTTP requests, but
it does pass the NSURLRequest to a delegate to object that
tests the headers.

There is currently a problem. I've added the
ReplicatorURLProtocolTester object to be the delegate. However,
the SenTestingKit macros don't seem to work! In the delegate,
even a call to STFail does not produce a failure.

But, when I make the ReplicationAcceptance class the delegate
it does work.

Help. (Or we could just leave it like this...)