[config] add cygwin-1.7 cc defaults. parrot-1.0 will only appear on cygwin-1.7
[config] add cygwin-1.7 cc defaults. parrot-1.0 will only appear on cygwin-1.7

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@37433 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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