add FORCE_ALIGNED_MEMORY=1 to -O3
show all dangerous pointer casts only in VERBOSE=1
shadow away i64<-->double casts in more cases
make sure interpLines works properly
make sure removeAndAdd works properly
Added OES_element_index_uint and OES_standard_derivatives detection, glDetachShader support and misc. function signature fixes
Merge pull request #1165 from inolen/library_gl_patches

library_gl misc fixes
recursively remove variables with no uses in eliminator
only recurse on decreasing uses on locals, and clear out names to avoid confusion later
do not eliminate if there is a switch
fix test_cases:trace