OS threading, DVD I/O, Endianness fixes, ARAM emulation, GX vertex fix

Major changes:

- Implement Big-Endian to Little-Endian byte-swapping for all RARC archive
  types (JKRCompArchive, JKRMemArchive, JKRDvdArchive, JKRAramArchive)
- Implement DVD file I/O via DvdEmu (DVDOpen, DVDFastOpen, DVDReadPrio,
  DVDReadAsyncPrio, DVDConvertPathToEntrynum)
- Fix YAZ0 decompression endianness in JKRDvdRipper, JKRDecomp, JKRAram,
  and JKRDvdAramRipper (use JKRDecompExpandSize instead of direct header read)
- Emulate ARAM with 16MB malloc buffer and synchronous memcpy in ARQPostRequest
  instead of hardware DMA transfers that hang on PC
- Add real OS threading implementation (OSContext, OSThread, OSMutex) using
  native Windows threads with side-table pattern for GC struct compatibility
- Fix font endianness for JUTResFont and JUTCacheFont
- Redirect GXVert.h to Aurora's PC implementation to prevent FIFO writes to
  the GameCube hardware address 0xCC008000
- Add Z-buffer texture format support (GX_TF_Z24X8, GX_TF_Z16, GX_TF_Z8)
  in Aurora's texture converter

src/JSystem/JKernel/JKRAramArchive.cpp

@@ -121,6 +121,7 @@ bool JKRAramArchive::open(s32 entryNum) {
         JKRDvdToMainRam(entryNum, (u8*)mem, EXPAND_SWITCH_UNKNOWN1, 32, NULL,
                         JKRDvdRipper::ALLOC_DIRECTION_FORWARD, 0, &mCompression, NULL);
         DCInvalidateRange(mem, 32);
+        JKRSwapArcHeader(mem);
         int alignment = mMountDirection == MOUNT_DIRECTION_HEAD ? 32 : -32;
         u32 alignedSize = ALIGN_NEXT(mem->file_data_offset, 32);
         mArcInfoBlock = (SArcDataInfo*)JKRAllocFromHeap(mHeap, alignedSize, alignment);
@@ -130,6 +131,7 @@ bool JKRAramArchive::open(s32 entryNum) {
             JKRDvdToMainRam(entryNum, (u8*)mArcInfoBlock, EXPAND_SWITCH_UNKNOWN1, alignedSize, NULL,
                             JKRDvdRipper::ALLOC_DIRECTION_FORWARD, 32, NULL, NULL);
             DCInvalidateRange(mArcInfoBlock, alignedSize);
+            JKRSwapArchiveMemory(mArcInfoBlock);
 
             mNodes = (SDIDirEntry*)((u8*)mArcInfoBlock + mArcInfoBlock->node_offset);
             mFiles = (SDIFileEntry*)((u8*)mArcInfoBlock + mArcInfoBlock->file_entry_offset);