Fix a number of compile warnings in `nrepl-client.el`

  Move the macro `nrepl-dbind-response` to the top and explicitly require
  `tramp`.
set pprint/*print-right-margin* to popup window width
Merge pull request #813 from vitoshka/pprint

set pprint/*print-right-margin* to popup window width
Merge pull request #812 from vitoshka/master

Fix a number of compile warnings in `nrepl-client.el`
[Fix #810] don't allow requests before client initialization has completed