v1.94 (for caanoo and gcw-zero)

Unofficial release for caanoo (zip) and gcw-zero (opk). Please let me know should you encounter any problems.

New features added:

• revive Helix Mp3 decoder support for ARM (Helix sources not supplied due to licensing)
• update GPH device support to use newer GCC 4.7
• ARM specific optimisations (speedup for emulated memory access, 32X draw code, DRC disassemblers)
• a lot of SH2 DRC and 32X emulation fixes to improve game compatibility
• improved DRC code generation (generated code now noticeably faster)
• improved SH2 DRC memory access functions (added 32 bit versions, sign extension)
• improved SH2 DRC register caching
• added branch caching to SH2 DRC
• optimisations to DRC ARM backend (code reordering, literal pool)
• added polling/idling loop detection and basic loop optimisation to SH2 DRC
• added call/return cache for SH2 DRC
• added cache for communication areas between 32X CPUs
• added T bit caching to ARM SH2 DRC backend (kept in host CPU flags as long as possible if possible)
• added x86_64. MIPS and aarch64 backends to SH2 DRC
• 32X DMA emulation optimisation
• revised SH2 DRC branch handling and host code block linking
• added 32X PWM interrupt optimisation (configurable since it may not work with all games)
• improved auto frameskipping