Fix escalate plugin build
TS-2699: Add TSClientProtoStackCreate API

Currently, plugin authors are expected to construct TSClientProtoStack
values by bitshifting them into their correct locations. This is
tedious likely to be error-prone. TSClientProtoStackCreate() accepts
a sequence of TSProtoType values, terminated by a TS_PROTO_NULL.
It combines the values and returns a TSClientProtoStack value that
describes the protocol layering of a client request.
TS-2706: replace the tcp_info plugin config file with options

Managing a configuration file is a lot of pain for a small number
of options. Replace the tcp_info plugin configuration file with
command line options that can be specified in plugin.config. This
also replaces the number is hook mast option with a human-readable
list of hooks where TCP informations whould be logged.
Added a bunch of Jira's to the CHANGES.