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v-orig

1. original code 

v-ph-clean-with-timers

2. timers 
3. timers with and without the -03 option 

v-ph-dct

4. normalization table (w/wo)
5. cosine table (w/wo)
6. sse of inner loop

v-ph-dct-avx

7. show avx inner loop 
8. show add (a+b+c+d+...) vs hadd (inside loop)

v-ph-dct2-avx

9. show hadd outside the loop
