Change some for+iterator loops in GeckoCode.cpp and GeckoCodeConfig.cpp into foreach loops.
Fix name conventions of some of the foreach loop variables.
Add const qualifiers to two foreach loop variables for consistency.

Also fix a vector include I happened to notice. Should be "<vector>" not "vector"
Merge pull request #34 from lioncash/geckocode-foreach

Change some for+iterator loops in GeckoCode.cpp and GeckoCodeConfig.cpp into foreach loops.