protobuf-c/protobuf-c-text — pull request #5 by bwegge (2014-11-18 15:59:32+00:00)
Title: Fix wrong integer en- and decoding in protobuf-c-text library.

int{32,64} should be treated as signed integers.
[u]int64 are [unsigned] long long integers.

Also see https://developers.google.com/protocol-buffers/docs/proto#scalar.