core: added Kernel::Reschedule() call to check for thread changes, shortened delay time to 100 instructions

svc: added a check to ensure that a service was implemented before attempting to connect to its port

thread: removed unused SwitchContext/Reschedule reason field, added missing arg parameter to SVC CreateThread

thread: moved ThreadStatus/WaitType to header, added support for arg on CreateThread, added correct CPSR reset

svc: added Kernel::Reschedule to svc WaitSynchronization1, updated log messages to include newly created handles

thread: added correct lowest thread priority, added a thread priority check, and added some comments

- cleaned up Kernel code a bit (moved stuff into namespace, fixed whitespace issues)
- added handle types for all different CTROS handles

README: Update wiki links

apt: changed stubbed handle to be something other than 0xDEADBEEF (used as a magic value in other places) so that I can track how it propagates through the app code

Fixes issues with building Citra on OSX

Only Rect is in the namespace for now; the rest of common should be added in the future

After adding FindGLEW.cmake to externals, the variable call for the GLEW include path needed to be revised.
Append flags on OSX, rather than overwrite them.
I realized that GCC_COMPILE_FLAGS was changed to CMAKE_CXX_FLAGS mistakenly, so both were changed to a more platform-independent name.