Given these are only used as function existence checks, we can simplify
some usages of declval, given they aren't particularly useful here.

Reduces a few template instantiations, which at most reduces compile
times a tiny bit.

We can make use of the _t variants of the templates to cut down on a
little bit of verbosity.

An identifier containing a starting underscore followed by a capital
letter is reserved by the standard. It's trivial to avoid this by moving
the underscore to the end of the identifier.

While the likelihood of clashing here being minimal, we can turn a
"should not break" scenario into a definitive "will not break" one, so
why not?.

audren: Disable reverb for the time being

kernel: Rewrite resource limit to be more accurate

acc: Fix error when second user is selected

Avoid overwriting username

settings: Log the cache, config and mod load directories

hid: Only update motion for npad and prevent over scheduling events

arm_dynarmic_32: Print out CPSR.T on exception

nifm: Stub GetCurrentNetworkProfile and GetCurrentIpConfigInfo

nifm: Fix GetAppletInfo stub

As this is causing issues in a few games, it's best to have it disabled until it's completely implemented

am/IApplicationFunctions: Stub IsGamePlayRecordingSupported

prepo: Stub RequestImmediateTransmission and GetTransmissionStatus

analog_from_button: Fix update_thread.join exception

- Used by Lets Sing 12

- Used by Animal Crossing: New Horizons

- Used by Minecraft Bedrock Edition
- Used by Bloons TD 5

bsd: Fix EventFd stub

Used by RetroArch

bsd: Fix GetSockOpt stub

am: Stub TryPopFromFriendInvitationStorageChannel

bsd: Stub EventFd

Used by Family Feud

Used by Family Feud