Fix Freelook on Linux and add speed reset.

Should fix issue 7692.
Also fixes issue 7147.

I have no idea if these changes will affect Mac or Windows users, so please test.
Update freelook description.
Reorganize faulting stuff.  Differentiate between arch- and OS-specific defines.

- Get rid of ArmMemTools.cpp and rename x64MemTools.cpp to MemTools.cpp.
  ArmMemTools was almost identical to the POSIX part of x64MemTools, and
  the two differences, (a) lack of sigaltstack, which I added to the
  latter recently, and (b) use of r10 to determine the fault address
  instead of info->si_addr (meaning it only works for specifically
  formatted JIT code), I don't think are necessary.  (Plus Android, see
  below.)

- Rename Core/PowerPC/JitCommon/JitBackpatch.h to Core/MachineContext.h.
  It doesn't contain anything JIT-specific anymore, and e.g. locking
  will want to use faulting support regardless of whether any JIT is in
  use.

- Get rid of different definitions of SContext for different
  architectures under __linux__, since this is POSIX.  The exception is
  of course Android being shitty; I moved the workaround definition from
  ArmMemTools.cpp to here.

- Get rid of #ifdefs around EMM::InstallExceptionHandler and just
  provide an empty implementation for unsupported systems (i.e.
  _M_GENERIC really).  Added const bool g_exception_handlers_supported
  for future use; currently exception handlers are only used by the JIT,
  whose use implies non-M_GENERIC, but locking will change that.

- Remove an unnecessary typedef.
Add GPUDeterminismMode to isoproperties.
Updated game ini files
D3D: fix issues with multi-level 1x1 textures on D3D

Fixes NBA 2K11, maybe other things.
Added Australia to the list of valid PAL regions
ISOFile: Get rid of a delete call
WatchView: Pass string by reference in SetWatchName
Merge pull request #1555 from lioncash/ref

WatchView: Pass string by reference in SetWatchName
Core: Join some variable declarations and assignments
Merge pull request #1554 from lioncash/unique

ISOFile: Get rid of a delete call
Merge pull request #1557 from lioncash/join

Core: Join some variable declarations and assignments
Explicitly compile external WX in C++11 mode.

Apparently an update to gcc now requires this.
Fix wxCommandEvent/wxThreadEvent subclass mismatch

Regression by 3fed975bac11956ffc4d3eae86c928c7e0c921db caused netplay to
crash on OS X.  While I'm at it, fix the long-standing "unsafe i guess"
AddPendingEvent, since we depend on wx 3 now...
Merge pull request #1558 from comex/command-thread-mismatch

Fix wxCommandEvent/wxThreadEvent subclass mismatch
ARMv7 register cache optimizations.
Enable support for not loading a destination register on FPR cache.
Dump registers if they won't be used later in the block. Stolen from Fiora.
Adds MCR/MRC to the ARMv7 emitter.
Implements block time profiling on ARMv7.

This was interesting implementing.
Our generic QueryPerformanceCounter function on ARMv7 was so slow that profiling a block was impossible.
I waited about five minutes and I couldn't even get a single frame to output.
This instead uses ARMv7's PMU to get cycle counts, which are a relatively minor performance drop in my testing.
One disadvantage of this method is that the kernel can lock us out of using these co-processor registers, but it seems to work on my Jetson board.
Another disadvantage is that we aren't having block times in "real" time but cycles instead, not too big of a deal.

This also removes instruction run counts from profiling because that's just annoying and we don't expose an interface for even getting those results
from our UI.
Changed the hotkeys to 1 and 2. Message in GUI changed to reflect this.