sigProcLib: Replace dynamically allocated resampling buffers

Instead use object allocated STL vectors. This simplifies code,
removes the need to explicitly release buffers, and fixes a
memory leak in destructor deallocation. Also, remove simplified
init and release sub-calls.

Maintain partition filter allocation using memalign() for SIMD
alignment requirements.

Change-Id: Ie836982794c10fb1b6334e40592d44b200454846
2 files changed