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.
add new JSUtil, automatically included via SpiderMonkey.h.
move JS_ASSERT there and rename JSU_ASSERT.
move scriptglue's REQUIRE_PARAMS there and rename to JSU_*
replace if(argc < x) bail() code with those macros.
This was SVN commit r4169.
