protobuf 2.6.0
protobuf: update 2.6.0 bottle.
protobuf-c 1.0.2
protobuf-c: update 1.0.2 bottle.
Bump revisions for protobuf 2.6.0
nanopb-generator: update 0.2.7_1 bottle.
ola: update 0.9.1_1 bottle.
szl: update 1.0_2 bottle.
zbackup: update 1.2_2 bottle.