Don't allow starting recording in states that will cause a crash or other problem.
Core: Fix case where a panic alert wouldn't be shown in MemoryUtil.cpp
Core: Actually show MemoryUtil.cpp allocation error messages on Linux
DolphinWX: More readable variable names in BreakpointView

Also doesn't make everything rely on a single temp variable.
DolphinWX: Fix variable styling in BreakpointView
Place bundled SFML include paths before others

This allows to build with bundled SFML when system SFML (of another
version) is installed
CommandProcessor: mark some functions as static
Merge pull request #838 from Tilka/unused

CommandProcessor: mark some functions as static
DiscIO: Make the unordered set in IsSoundFile static

Doesn't need to be instantiated every time the function is called.
JIT64: clean up and unify float load/store code

While we're at it, support a bunch of float load/store variants that weren't
implemented in the JIT. Might not have a big speed impact on typical games but
they're used at least a bit in povray and luabench.

694 -> 644 seconds on povray.
DiscIO: Move VolumeDirectory off of raw pointers
Merge pull request #875 from lioncash/statics

DiscIO: Make the unordered set in IsSoundFile static
Disable all logs by default.
JIT64: add mulhwx implementation
PPCFP: add comment
Merge pull request #884 from FioraAeterna/ppcfpopt

PPCFP: add comment
Refactor SetCpStatus into two functions for from-GPU and from-CPU mode rather than a boolean parameter.

This shouldn't affect functionality.  I'm not sure if the breakpoint
distinction is actually necessary (my commit messages from the old
dc-netplay last year claim that breakpoints are broken anyway, but I
don't remember why), but I don't actually need to change this part of
the code (yet), so I'll stick with the trimmings change for now.
A tiny restructuring to allow inlining of FifoCommandRunnable.  Probably useless.
Add Flag support to ChunkFile.h
Unify three types of non-FIFO requests to the GPU thread around Common::Event and Common::Flag.

The only possible functionality change is that s_efbAccessRequested and
s_swapRequested are no longer reset at init and shutdown of the OGL
backend (only; this is the only interaction any files other than
MainBase.cpp have with them).  I am fairly certain this was entirely
vestigial.

Possible performance implications: efbAccessReady now uses an Event
rather than spinning, which might be slightly slower, but considering
the slow loop the flags are being checked in from the GPU thread, I
doubt it's noticeable.

Also, this uses sequentially consistent rather than release/acquire
memory order, which might be slightly slower, especially on ARM...
something to improve in Event/Flag, really.