Utils: Make process results accessible through QtcProcess object

The result is fully stored in the object anyway. Using the extra
SynchronousProcessResponse structure only causes copies of
the data and complicates access on the user side in
a lot of cases.

The result bits are now also accessible individually.

There's obvious room for follow-up changes on the topic, e.g.
ShellCommand::runCommand's parameter list could shrink to
just a SynchronousProcess parameter.

Change-Id: I45aa7eb23832340be06905929280c012e1217263
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/vcsbase/vcsbaseplugin.cpp

@@ -752,21 +752,6 @@ void setProcessEnvironment(Environment *e, bool forceCLocale, const QString &ssh
         e->set("SSH_ASKPASS", sshPromptBinary);
 }
 
-// Run a process synchronously, returning Utils::SynchronousProcessResponse
-// response struct and using the VcsBasePlugin flags as applicable
-SynchronousProcessResponse runVcs(const QString &workingDir,
-                                  const CommandLine &cmd,
-                                  int timeOutS,
-                                  unsigned flags,
-                                  QTextCodec *outputCodec,
-                                  const Environment &env)
-{
-    VcsCommand command(workingDir, env.size() == 0 ? Environment::systemEnvironment() : env);
-    command.addFlags(flags);
-    command.setCodec(outputCodec);
-    return command.runCommand(cmd, timeOutS);
-}
-
 } // namespace VcsBase
 
 #include "vcsbaseplugin.moc"