Add parameter to control max connections for RealMongoSpecSupport

Default of 10 is a bit low in many cases, so we also bumped the default
Merge pull request #86 from dchenbecker/topic/realmongospec-config-maxconns

Add parameter to control max connections for RealMongoSpecSupport
Merge remote-tracking branch 'nuttycom/master'
Mark the servlet API as provided to avoid downstream pollution
No more orbit dep in core

The jetty dep is only used for test and we certainly aren't using
CORBA anywhere in there.
Harmonizing akka versions.
Merge remote-tracking branch 'jdegoes/master'

Conflicts:
	core/build.sbt
Reverting the removal of extraneous buffering allows the zip tests to
succeed, which is troubling.