Fix executor regression.

- Fix executor regression caused by writing sizes as size_t and reading
  them back as int via CallQueue.
- Add assert checking each CallQueue consumer consumes all data.
- Keep data sizes as size_t in xeTestLogParser.

Bug: 21515831
Change-Id: I6b56f5ba139f88878b2e5f148b0530d4d939a0b5
8 files changed