the old debug_assert always ran and tested the expression, which slows
down release builds. wrapping them in #ifndef NDEBUG is clumsy. the new
ASSERT behaves like assert and ENSURE like the old debug_assert. Let's
change any time-critical but not-super-important ENSURE to ASSERT to
speed up release builds. (already done in bits.h and unique_range.h)
This was SVN commit r9362.
wposix: Define int8_t compatibly with SpiderMonkey.
Remove unused camera, lightenv JS interfaces.
Remove most of vector JS interface.
Remove some of the redundant JS string conversion functions.
Remove unneeded vmem, _lodBias functions.
Clean up some formatting.
This was SVN commit r8629.