Added assert for TEXS nodep

Build - Upload fewer artifacts

yuzu: Display the unsupported GL extensions in the popup

Added better asserts to IPA, Renamed IPA modes to match mesa

Added FFMA asserts and missing fields

Added FMUL asserts

filesystem: Move dir retrieval after path checking in DeleteFile()

We don't need to do the lookup if the path is considered empty
currently.

Appveyor has a limit on artifact retention, and we hit the limit all the
time, so just lower the number of build artifacts to just the final zip

Unneeded as we already implement it

Saturate already implemented

IpaMode is changed to IpaInterpMode
IpaMode is suppose to be 2 bits not 3
Added IpaSampleMode
Added Saturate

Renamed modes based on
https://github.com/mesa3d/mesa/blob/d27c7918916cdc8092959124955f887592e37d72/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp#L2530

.travis: Use Citras ccache for builds instead of yuzus

core/core: Replace includes with forward declarations where applicable

The follow-up to e2457418, which
replaces most of the includes in the core header with forward declarations.

This makes it so that if any of the headers the core header was
previously including change, then no one will need to rebuild the bulk
of the core, due to core.h being quite a prevalent inclusion.

This should make turnaround for changes much faster for developers.

Various fixes and improvements to rasterizer cache 2: Electric Boogaloo

- Use a single cached page map.
- Fix calculation of ending page.

* Implement BC6H_UF16 & BC6H_SF16
Require by ARMS

* correct coding style

* correct coding style part 2

core: Make the main System class use the PImpl idiom

Report correct shader size.

Add predicate comparison 14 (GreaterEqualWithNan)

core.h is kind of a massive header in terms what it includes within
itself. It includes VFS utilities, kernel headers, file_sys header,
ARM-related headers, etc. This means that changing anything in the
headers included by core.h essentially requires you to rebuild almost
all of core.

Instead, we can modify the System class to use the PImpl idiom, which
allows us to move all of those headers to the cpp file and forward
declare the bulk of the types that would otherwise be included, reducing
compile times. This change specifically only performs the PImpl portion.

Seems like this was an oversee in regards to 1fd979f5
It changed GLShader::ProgramCode to a std::vector, so sizeof is wrong.

yuzu: Show game compatibility in the game list (PR ported from Citra)

* Implement POPC

* implement invert

gl_shader_decompiler: Improve IPA for Pass mode with Position attribute.

kernel: Eliminate kernel global state

Port #3825 from Citra: "travis: share environment variables with Docker"

Shaders: Implemented IADD3