Patch for TS-2652: Allowing cancelation of AsyncProviders
Remaporder

Clear up some of the ordering questions (how they work) and clear out some trailing whitespace
TS-2661: Remove unused HttpSM::decide_cached_url method.
Fix harmless Ethread::schedule_in parameter mismatch
Merge branch 'remaporder' of https://github.com/jacksontj/trafficserver
[TS-2662] Re-enable KEEP_ALIVE_POST_OUT by default. This closes #66
[TS-2662] Re-enable KEEP_ALIVE_POST_OUT by default.
TS-2660: rename StateMachineAction_t values with a consistent prefix

  - All values are named SM_ACTION_XXX
  - Redundant works, like HTTP and PROXY are removed.
  - Where common tokens are use, these are grouped to the left, as
    in SM_ACTION_DNS and SM_ACTION_CACHE.
  - Removes unused actions SEND_QUERY_TO_INCOMING_ROUTER and
    EXTENSION_METHOD_TUNNEL.
  - Remove unused state HTTP_POST_REMAP_UPGRADE.
[TS-2664] Removing initializable value files
[TS-2664] Removing initializable value code
[TS-2664] atscppapi: Removing initializable value code
TS-2564 Revert field token ordering.
TS-2663 Wrong condition on log code for server connection errors
Added TS-2663 to CHANGES>
TS-2652: Providing a true cancel() in AsyncTimer
[TS-2665] Clean up ink_stack_trace_dump code
xdebug: no need to remove mime fields before destroying them
Patch for TS-2667 atscppapi: Allow intercept plugins to access request headers object
TS-2654 Crash in Range requests with read-while-writer.
TS-2671: restore missing .useflt remap directive