there are issues with SIMD, lets fix them!

[dromer]

Mainly AVX seems to fail in the tests.

Example backtrace:

Program received signal SIGSEGV, Segmentation fault.
0x0000555555559909 in __hv_store_f(float*, float __vector(8)) (bOut=0x55555557df50, bIn=...) at ./HvMath.h:64
64      _mm256_store_ps(bOut, bIn);
(gdb) bt
#0  0x0000555555559909 in __hv_store_f(float*, float __vector(8)) (bOut=0x55555557df50, bIn=...) at ./HvMath.h:64
#1  0x00005555555593fc in Heavy_heavy::process (this=0x5555555792c0, inputBuffers=0x0, outputBuffers=0x7fffffffd848, n=480) at Heavy_heavy.cpp:309
#2  0x00005555555599a4 in Heavy_heavy::processInline (this=0x5555555792c0, inputBuffers=0x0, outputBuffers=0x55555557df50, n4=480) at Heavy_heavy.cpp:328
#3  0x00005555555584ae in hv_processInline (c=0x5555555792c0, inputBuffers=0x0, outputBuffers=0x55555557df50, n=480) at HvHeavy.cpp:304
#4  0x000055555555b9d1 in main (argc=5, argv=0x7fffffffda18) at test_signal.c:57

Hopefully in order to fix #139 as well.