Replaced static vm logTable with dynamic inline version in EXP opcode

[holgerd77]

Addresses #449, 1. List Item

[coveralls]

Coverage increased (+1.0%) to 92.295% when pulling a20b07f on replace-vm-logTable-with-dynamic-exp-inline into 0f7e010 on master.

[holgerd77]

Ah, this would be another 1%+ coverage increase. I know on the one hand this is cosmetics, on the other hands obscure code parts like these distract from the more important coverage improvement necessities.

[s1na]

Thanks for this. I was confused what the role of logTable is sometime ago. This PR makes it clear it's not absolutely necessary and can be very much simplified without much performance penalty!

I just had a few small comments and questions, basically to understand better what EXP is doing and whether it can be simplified further.

[holgerd77]

In this first round I was only looking for some functional replacement without fully understand the functionality. Will go through your comments and have a look what can be integrated, definitely worth to do a second round here.

[s1na]

This looks great now!