vhdl unit tests
Fix typos
Use same table style as soldering tests
Fix refs
change table header
Combine related tables in test section
Merge pull request #89 from dmpro2014/combine-test-tables

Combine related tables in test section
Merge pull request #90 from dmpro2014/vhdl_unit_tests_rebase

Vhdl unit tests rebase
Performance section
Comments fix
processor type
Mention FPS, 512x256 instead of 512x250