Fix incorrect calculation of IntBits. Fix over-shifting of int by explicitly making type ULL.
Add LV2_DEPS_* and FFTW3_DEPS_* vars to allow build to correctly compile if these libs are not in the standard system dirs.
Conditionally include malloc.h (APPLE includes its functions in stdlib.h)
Fix member access op from '.' to '->' (g++ only warns but clang fails)