Kernel/IPC: Use Ports and Sessions as the fundamental building block of Inter Process Communication.

All handles obtained via srv::GetServiceHandle or svcConnectToPort are references to ClientSessions.
Service modules will wait on the counterpart of those ClientSessions (Called ServerSessions) using svcReplyAndReceive or svcWaitSynchronization[1|N], and will be awoken when a SyncRequest is performed.

HLE Interfaces are now ClientPorts which override the HandleSyncRequest virtual member function to perform command handling immediately.

Move WINVER definition to cmake and a bit of cleanup

dynarmic: Fix ABI violation

Caused by not saving/restoring the x64 r15 register on entry/exit from
JITted code.

Closes #2224.

ClangFormat: Fixed the clang-format errors

Set client SDK version to Service APIs

Build: Fixed a few warnings.

Kernel/Loader: Grab the system mode from the NCCH ExHeader.

Remove the broken frame_skip option

Correct FS error codes & add path boundary checks

3dsx and elf files default to system mode 2 (96MB allocated to the application).

This allows Home Menu to boot without modifications.
Closes #1849

Rasterizer/Memfill: Set the correct stencil write mask when clearing the stencil buffer.

Fixes #1960.

MIC_U: Stub service funcions

Change "user" folder default location to AppData/Roaming/ on Windows systems

dynarmic: Add ticks based on ticks executed, not ticks requested

Expose page table to dynarmic for optimized reads and writes to the JIT

Travis: Remove build uploading

@archshift has been MIA for a while, so our builds server is currently
down. Furthermore, uploading is broken in both Linux and macOS:

- The version of lftp in Trusty doesn't support the sftp:auto-confirm
  option, which means that uploading would hang, even if the server
  weren't down. It currently tries to connect forever and fails the
  build with a timeout.
- lftp was removed from Homebrew, so it wasn't being installed on macOS
  and invoking it just failed.

Windows, move to SDL2-2.0.5

This patch brings +3% performance improvement on average. It removes
ToVertex() as an important hotspot of the emulator.

* Bravely Default/Second stuck #1822
CancelLibraryApplet stub

* Log parameter.

* Taking care of comments

* Sync with 3DBrew

* White space ?

* lower case

Change "OS X" to "macOS" in the Readme

cfg: add config block 0x00090000

Rework the code of err:f service!