improve quickfix and title when go_term_enabled is set

* set the title to the result of joining the elements of the list when
  the command is a list.
* strip trailing carriage returns from error messages.

Author: hiberabyss

autoload/go/term.vim

@@ -1,4 +1,5 @@
 " new creates a new terminal with the given command. Mode is set based on the
+			List:	    3  |v:t_list|
 " global variable g:go_term_mode, which is by default set to :vsplit
 function! go#term#new(bang, cmd) abort
   return go#term#newmode(a:bang, a:cmd, go#config#TermMode())
@@ -90,7 +91,11 @@ function! s:on_exit(job_id, exit_status, event) dict abort
 
     call win_gotoid(self.winid)
 
-    call go#list#Populate(l:listtype, errors, self.cmd)
+    let title = self.cmd
+    if type(title) == v:t_list
+      let title = join(self.cmd)
+    endif
+    call go#list#Populate(l:listtype, errors, title)
     call go#list#Window(l:listtype, len(errors))
     if !self.bang
       call go#list#JumpToFirst(l:listtype)

autoload/go/tool.vim

@@ -118,7 +118,7 @@ function! go#tool#ParseErrors(lines) abort
       " Preserve indented lines.
       " This comes up especially with multi-line test output.
       if match(line, '^\s') >= 0
-        call add(errors, {"text": line})
+        call add(errors, {"text": substitute(line, '\r$', '', '')})
       endif
     endif
   endfor