* Optimized/coupled surround support for 5.1 encoding at 44.1/48kHz
* Added encoder control call to disable channel coupling
* Corrected an overflow bug in very low-bitrate encoding on 32 bit
machines that caused inflated bitrates
* Numerous API hardening, leak and build fixes
* Correct bug in 22kHz compand setup that could cause a crash
* Correct bug in 16kHz codebooks that could cause unstable pure
tones at high bitrates
0df5f843f0