Use pkg-config for flags/libs on nix, update refs.
Fix build issues, update refs again.

  * Merge latest commits from angrylion.
  * Apply micro-optimizations to the VR4300.
Update README.md per Issue #2.
Update refs; several performance improvements.
Update ref that fixed a RSP bug.
Update submodule refs.

  * Several bugfixes.
Update vr4300 ref.

  * Patch a severe VR4300 bug.
Update rsp ref.

  * Fix a latent RSP bug.
Update avatar, courtsey of ShadowFX.
Print build types for RSP/RDP in usage menu.
Update refs.

  * Fix several bugs, particularily VR4300 CP1 related.
  * Add instruction support: DMFC1, DMTC1, (VR4300) and LBV (RSP).
  * Patch peripheral interface ROM transfers.
  * Force audio interrupts to not fire at random.
  * Embed a build type of RSP/RDP into binary.
Fix builds on Mac OS X.

Thanks to @kode54 for his bug reports and assistance.
Fix debug builds on Windows.
Push a ref that got downgraded.
Handle events better, get ready for save support.

  * Move window/GUI logic to main application.
  * Detect window close requests.
  * Allow plugins to gracefully shutdown.
Add EEPROM load/save support.

  * Thanks to @arbingordon for patches/work.
Update README.md
Merge pull request #5 from scizzorz/master

Update README.md
Add support for glfw3.

Patch courtesy of Grachev from #n64dev.
Allow the window to be resized.

Patch courtesy of Grachev from #n64dev.