[core] Add a -X option to the parrot executable for specifying an additional search path for dynamic extensions. Also add long form options for -I (--include), -L (--library), and -X (--dynext).
[core] Add a -X option to the parrot executable for specifying an
additional search path for dynamic extensions. Also add long form
options for -I (--include), -L (--library), and -X (--dynext).


git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@38094 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot