Added build for coremark and embench to main makefile.

Created by: rosethompson

• added branch predictor configs with embench to nightly.
• Increased timeout for nighly regressions.
• Rough draft removal of duplicate BPBTAWrongE logic.
• Fixed bugs in the regression-wally script required for branch predictor sweeps.
• Ugh. This is getting frustrating. Can't seem to get embench to run correctly in new script.
• Ugh. I can't seem to get questa to set the top level parameters anymore.
• Finally have regression-wally -nightly producing branch predictor results.
• Updated branch predictor derivative configs.
• Added makefile rule to build the embench benchmarks.
• Added coremark to benchmarks.