gcalc: Switch to the util library.
gcalc: Switch to the util library.

Former-commit-id: 7359ede5e078a7dac87652d444250a4e327de3aa [formerly 18f5cacffcb84dc491148ede0398ef392999e5a7]
Former-commit-id: e3fe7cbc8e9d1a7b46ae2bd889bf3937aa0b135f
torhve/ivar2,haste/ivar2,torhve/ivar2,torhve/ivar2