Rename the cate and functions to better identify things as
application-specific.
Change-Id: Ie4c888f6b0c0b66c2d4cfb6e0fb3b5b1e0b82c48
GitOrigin-RevId: 5ea9e1204023f717bbb63dcc0cf0579c1359e2da
This hello app uses the logger crate plumbed to the console. Way
bigger than the C version.
Change-Id: I7bf7e8b559fea8e045123d057412493bf7b71a24
GitOrigin-RevId: 97e12e93cc9ebfb4be021cff506417d7434b27f5