#78: Add custom compile of mgdraw.f
added main cases that tracking needs
added special_search function to bump the particle slightly and thens earch
through all volumes to find volume xyz is in
prototype for special_search
removed lines that change the value of retstep and propstep
included comments regarding std::cout and errors in functions
Merge pull request #81 from svalinn/code_only_g1fix

I am performing my first merge, smoke me a kipper, Ill be back for breakfast.
added particle direction to point_in_volume call
switch link order
broke the process, but seems more correct, argh!
added new function to prove we are where we say we are
removed lkwr function from g1_fire and added dir to point_in_volume
Add comments; initialize is_inside
Merge pull request #84 from svalinn/point_in_volume_issue_78

added particle direction to point_in_volume call
added main cases that tracking needs
added special_search function to bump the particle slightly and thens earch
through all volumes to find volume xyz is in
prototype for special_search
removed lines that change the value of retstep and propstep
included comments regarding std::cout and errors in functions
added particle direction to point_in_volume call