submission_package: Use std::string's rfind() when looking for the extension in InitializeExeFSAndRomFS()

When searching for a file extension, it's generally preferable to begin
the search at the end of the string rather than the beginning, as the
whole string isn't going to be walked just to check for something at the
end of it.

If an error occurs when constructing the PartitionFilesystem instance,
the constructor would be exited early, which wouldn't initialize the
extracted data member, making it possible for other code to perform an
uninitialized read by calling the public IsExtractedType() member
function. This prevents that.

Like the other two bits of factored out code, this can also be put
within its own function. We can also modify the code so that it accepts
a const reference to a std::vector of files, this way, we can
deduplicate the file retrieval.

Now the constructor for NSP isn't a combination of multiple behaviors in
one spot. It's nice and separate.

This too, is completely separate behavior from what is in the
constructor, so we can move this to its own isolated function to keep
everything self-contained.

This behavior is entirely independent of the surrounding code, so it can
be put in its own function to keep the behavior separate.

We can use early continues here to reduce the amount of nesting.

TLDS: Add 1D sampler

externals: Update dynarmic to 4e6848d

gl_rasterizer_cache: Implement cubemap textures.

qt: Install System TitleTypes to System NAND

Implement ISystemDisplayService::GetDisplayMode

svc: Implement svcGetThreadContext

- Fixes issues with Splatoon 2.

4e6848d A32/ir_emitter: Bugfix: ExceptionRaised was producing incorrect PC
41ba9fd value: Move ImmediateToU64() to be a part of Value's interface
c6a6271 reg_alloc: Emit AVX instructions where able
aedd32a abi: Emit AVX instructions where able
f2d9337 a64_exclusive_monitor: Loosen memory ordering requirements
7ca709d travis: Make macOS builds use Xcode 10
14dd45e Fix VShift terminology
88554c4 emit_x64_vector: AVX512 implementation of EmitVectorLogicalVShiftS16
ab4e316 emit_x64_vector: AVX512 implementation of EmitVectorLogicalVShiftS64
0ea84f3 emit_x64_vector: AVX2 implementation of EmitVectorLogicalVShiftS32
c77a2c5 emit_x64_vector: AVX512 implementation of EmitVectorLogicalVShiftU16()
e9441fd emit_x64_vector: AVX2 implementation of EmitVectorLogicalVShiftU64()
0e9c33c emit_x64_vector: AVX2 implementation of EmitVectorLogicalVShiftU32()
8f85274 emit_x64_vector: SSSE3 variant of EmitVectorCountLeadingZeros8()
be05e75 Merge pull request #397 from VelocityRa/dec-shift-fix
bc328fc decoders: Cast to correctly-sized type before shifting
9c3d2d1 a64_emit_x64: Lowercase PAGE_SIZE
f538d29 emit_x64_vector_floating_point: SSE4.1 implementation of EmitFPVectorToFixed
1603a6e emit_x64_vector_floating_point: EmitFPVectorRoundInt: Use FCODE
2e1ccaf emit_x64_vector: AVX implementation for EmitVectorCountLeadingZeros8
555bfda emit_x64_vector: SSE implementation of EmitVectorCountLeadingZeros16
71c2589 externals: Update Xbyak to 5.73
1ec1b2f Squashed 'externals/xbyak/' changes from 1de435ed..42462ef9

Port citra-emu/citra#4269: "OSX: Set MACOSX_DEPLOYMENT_TARGET to 10.13"

Now that we have all of the rearranging and proper structure sizes in
place, it's fairly trivial to implement svcGetThreadContext(). In the
64-bit case we can more or less just write out the context as is, minus
some minor value sanitizing. In the 32-bit case we'll need to clear out
the registers that wouldn't normally be accessible from a 32-bit
AArch32 exectuable (or process).

This will be necessary for the implementation of svcGetThreadContext(),
as the kernel checks whether or not the process that owns the thread
that has it context being retrieved is a 64-bit or 32-bit process.

If the process is 32-bit, then the upper 15 general-purpose registers
and upper 16 vector registers are cleared to zero (as AArch32 only has
15 GPRs and 16 128-bit vector registers. not 31 general-purpose
registers and 32 128-bit vector registers like AArch64).

Makes the public interface consistent in terms of how accesses are done
on a process object. It also makes it slightly nicer to reason about the
logic of the process class, as we don't want to expose everything to
external code.

Internally within the kernel, it also includes a member variable for the
floating-point status register, and TPIDR, so we should do the same here to match
it.

While we're at it, also fix up the size of the struct and add a static
assertion to ensure it always stays the correct size.

loader: Make the Load() function take a process as a regular reference, not a SharedPtr

A process should never require being reference counted in this
situation. If the handle to a process is freed before this function is
called, it's definitely a bug with our lifetime management, so we can
put the requirement in place for the API that the process must be a
valid instance.

Port citra-emu/citra#4258: "Meta: Add gitattributes file"

kernel/object: Remove unnecessary std::move from DynamicObjectCast()

video_core: Implement point_size and add point state sync

gl_state: Pack sampler bindings into a single ARB_multi_bind

process/vm_manager: Initial modifications to load NPDM metadata

boost::static_pointer_cast for boost::intrusive_ptr (what SharedPtr is),
takes its parameter by const reference. Given that, it means that this
std::move doesn't actually do anything other than obscure what the
function's actual behavior is, so we can remove this. To clarify, this
would only do something if the parameter was either taking its argument
by value, by non-const ref, or by rvalue-reference.