* NEW: The process child errors raised before the exec() system call are
now catched in a separate function called by the compiler explicitly
after a SHELL or EXEC assignment.
[COMPILER]
* NEW: SHELL and EXEC assignments now call an hidden subroutine just after
the assignment to immediately check for a possible child error.
git-svn-id: svn://localhost/gambas/trunk@6681 867c0c6c-44f3-4631-809d-bfa615b0a4ec
655f3474c7