[split] bump util to 6.22.2-SNAPSHOT

RB_ID=493423
TBR=true
NO-QUEUE=true
[split] bump ostrich to 9.6.2-SNAPSHOT

RB_ID=493469
TBR=true
NO-QUEUE=true
[split] birdcage: Add provides clause for ostrich

Add provides clause for ostrich so that it can be published by pants.

RB_ID=494065
Merge branch 'tmp' into develop
[split] =Merge branch 'master' into sq_reserved/498209_util-6.22.2_1029222833

RB_ID=498209
TBR=true
NO-QUEUE=true
[split] =bump ostrich_2.10 to 9.6.4-SNAPSHOT

RB_ID=499001
TBR=true
NO-QUEUE=true
[split] Cut over from maven publishing to pants publishing.

RB_ID=502437
[split] Remove more poms

Not sure how these slipped by last time, removing more poms. Will skip adding the rest of the company out of shame and since they already shipited it.

RB_ID=505101
TBR=true
NO-QUEUE=true
[split] ostrich: fix typos in HistogramSpec

Fix the typos in `com.twitter.ostrich.stats.HistogramSpec`.

RB_ID=508599
Merge branch 'tmp' into develop
[split] twitter-server & ostrich: Drop reflection of an MX bean

Problem:
BufferPoolMXBean was introduced in JDK 7 and for supporting JDK 6 we
needed to invoke the class loader manually and use reflection to load it
where available to provider direct byte buffer stats.  Now JDK 6 support
is dropped, no justification is left for complex piece of code.

Solution:
Remove class loading and reflection.
Import `java.lang.management.BufferPoolMXBean` interface and used it as
a Platform MX Bean.

Result:
No observable changes in exported stats.

RB_ID=521207
Merge branch 'tmp' into develop
Finagle, Ostrich, Util: Fix sbt project definition

Problem

Finagle was not compiling with sbt for multiple reasons:
- the java compilation of AbstractCloseAwaitably.java required one extra import
- finagle-httpx-compat required direct dependencies on finagle-http(x)

Solution

Fix the sbt project definition of Util/Finagle.
While I was there, I cleaned up some scaladoc warning in util and
some compilation warning in ostrich.

RB_ID=525909
Update sbt projet definitions of (util, ostrich, scoorge, twitter-server)

Problem

In order to release our libraries for the open-source community, we need to update
the version of those.

Solution

Update the version in the sbt project definition.
While I was there, update also sbt to the latest version and increase the jvm
configuration for the code cache.

RB_ID=537603