Update strsize. Fix file not found infinite loop.
Fix bugs in evaluating BoolExpr

Move char type to the front of value structs so that I can test for
  "|\0" and "&\0" being accidentally treated as Value* instead of
  char*
Make sure that the evaluation of <, >, = are added to the end of the
  stack that is evaluated for determining the results of | and &
Properly copy over the stacks when creating the BoolExpr from its
  components and free the outer struct but not its List* components
Fix memory leaks; don't free outer scoped vars
Fix line numbering bug in files with comments
Add a couple euler problem solutions. Add to bool.ff