Split MIN_PROTO_VERSION into INIT_PROTO_VERSION and MIN_PEER_PROTO_VERSION

INIT_PROTO_VERSION is the initial version, after a succesful version/verack it is increased to a negotiated version.
MIN_PEER_PROTO_VERSION could be a different value to disconnect from peers older than a specified version.
Skip comparison tool on win32 since Wine breaks it
[Qt] rename rpcconsole window

- rework window title to not include Bitcoin - in front, as no other
  dialog does this
- favor a connect() call over an own function for clearing the traffic
  graph
- write monospace lowercase (seems to be correct after some web search)
  and add a comment that we should avoid / remove fixed font sizes
Merge pull request #3222 from Diapolo/debug-window

[Qt] rename rpcconsole window
Merge pull request #3155 from wtogami/split_proto_var

Split MIN_PROTO_VERSION into INIT_PROTO_VERSION and MIN_PEER_PROTO_VERSION
Add a few more basic script/tx test-cases.
Merge pull request #3223 from TheBlueMatt/master

Test changes