docs: protobuf-c-compiler on recent Jessie appears to work
docs: protobuf-c-compiler on recent Jessie appears to work

It managed to build, it starts and appears to work (but I haven't tried
any real work or plugins yet).

rastislavszabo/sysrepo,fanchanghu/sysrepo,morganzhh/sysrepo,fanchanghu/sysrepo,morganzhh/sysrepo,lukasmacko/sysrepo,lukasmacko/sysrepo,lukasmacko/sysrepo,rastislavszabo/sysrepo,morganzhh/sysrepo,fanchanghu/sysrepo,lukasmacko/sysrepo,rastislavszabo/sysrepo,fanchanghu/sysrepo,lukasmacko/sysrepo,morganzhh/sysrepo,morganzhh/sysrepo,lukasmacko/sysrepo,lukasmacko/sysrepo,morganzhh/sysrepo,fanchanghu/sysrepo,morganzhh/sysrepo,fanchanghu/sysrepo,rastislavszabo/sysrepo,rastislavszabo/sysrepo,rastislavszabo/sysrepo,fanchanghu/sysrepo,rastislavszabo/sysrepo