snownews: EXTRA_LDFLAGS, ENV.cc added to make call

Build does fail on Snow Leopard:
"Looking at the build output, it seems like it's not respecting the LDFLAGS Homebrew is setting in the environment, which are necessary for it to find gettext. Superenv is helpfully filling it in, but it'll fail to build in the other build environment."
https://github.com/mxcl/homebrew/pull/21026#issuecomment-20559236