Summary: Profiling additions.

Summary: Profiling additions.
Keywords:

* Added an eventRun profiler hook.
* Added a store_client profiler hook, surrounding kick_reads.
  Prevented reentrancy.
* Added a storeDirCallback profiler hook.
  Refactored to reduce variable scope.
* Added a profiler hook to comm_calliocallback.
  Refactored to reduce variable scope.
* Added surrounding hooks to the read,accept,write and fill
  comm callback callers.
* Added profiling hook around HttpStateData::readReply.
* Added profiling hook around HttpStateData::processReplyData.
* Added profiling hook around StoreEntry::write.
* Added profiling hook around storeGetMemSpace.
* Added profiling hook around MemObject::write.
* Added profiling hook around storeWriteComplete.
* Added profiling hook around mem_hdr::write.