[OpenMP] Be more forgiving during record and replay

When we record and replay kernels we should not error out early if there
is a chance the program might still run fine. This patch will:
1) Fallback to the allocation heuristic if the VAMap doesn't work.
2) Adjust the memory start to match the required address if possible.
3) Adjust the (guessed) pointer arguments if the memory start adjustment
   is impossible. This will allow kernels without indirect accesses to
   work while indirect accesses will most likely fail.