baseline cleanups from Async Monitor Deflation v2.0[789]

This subtask captures baseline cleanups from the v2.0[789]
versions of the Async Monitor Deflation project.

- src/hotspot/cpu/x86/macroAssembler_x86.cpp
  - consistent comments for a style of movptr() that will destroy r10.
  - correct case for 'fast_lock' and 'fast_unlock' function mentions in the comments.
  - consistent 'fast path' and 'slow path' typography in comments.
- the _recursions field should be printed using INTX_FORMAT instead
  of INTPTR_FORMAT.
- delete some stale/incorrect comments.
- misc white space fixes.
- add ObjectMonitor::print_debug_style_on() and use it in the
  "Non-balanced monitor enter/exit!" assert() case in ObjectMonitor::exit().
  The extra diagnostics are done via monitorinflation=error logging.