And associated cleanup.
On most compilers these days, it'll either inline the memset with vector
fills or rep stosq, or outline with a call to memset.
I trust the compiler is probably going to make a better decision here,
than manual SSE intrinsics.
Ends up a couple of percent faster in FMV decoding.
* common: format AlignedMalloc.cpp
* common: format AppTrait.h
* common: format Assertions.h
* common: format CheckedStaticBox
* common: format Console
* common: format Dependencies.h
* common: format EmbeddedImage
* common: format EventSource
* common: format Exceptions
* common: format FastFormatString.cpp
* common: format General.h
* common: format InitInterface
* common: format MathUtils.h
* common: format MemsetFast/MemcpyFast
* common: format Mutex.cpp
* common: format PageFaultSource.h
* common: format Path.h
* common: format PathUtils.cpp
* common: format Pcsx2Types.h
* common: format Perf
* common: format PersistentThread.h
* common: format RwMutex
* common: format SafeArray
* common: format ScopedAlloc.h
* common: format ScopedPtrMT.h
* common: format Semaphore.cpp
* common: format StringHelpers
* common: format ThreadTools.cpp
* common: format Threading.h
* common: format ThreadingDialogs
* common: format ThreadingInternal.h
* common: format TraceLog.h
* common: format VirtualMemory.cpp
* common: format pxCheckBox
* common: format pxEvents.h
* common: format pxForwardDefs.h
* common: format pxRadioPanel
* common: format pxStaticText
* common: format pxStreams
* common: format pxTranslate.cpp
* common: format pxWindowTextWriter.cpp
* common: format wxAppWithHelpers
* common: format wxBaseTools.h
* common: format wxGuiTools
* common: format wxHelpers.cpp
* common: format Darwin directory
* common: format Linux directory
* common: format Windows directory
* common: format LnxCpuDetect.cpp
* common: format WinCpuDetect.cpp
* common: format bmi.cpp
* common: format cpudetect.cpp
* common: format cpu_detect_internal.h
* common: format fpu.cpp
* common: format groups.cpp
* common: format instructions.h
* common: format internal.h
* common: format jmp.cpp
* common: format legacy.cpp
* common: format legacy_instructions.h
* common: format legacy_internal.h
* common: format movs.cpp
* common: format simd.cpp
* common: format tools.h
* common: format x86emitter.cpp
* common: format x86types.h
* common: format bmi.h
* common: format dwshift.h
* common: format group1.h group2.h group3.h
* common: format incdec.h
* common: format jmpcall.h
* common: format movs.h
* common: format simd_arithmetic.h
* common: format simd_comparisons.h
* common: format simd_helpers.h
* common: format simd_moremovs.h
* common: format simd_shufflepack.h
* common: format simd_templated_helpers.h
* common: format test.h
