Git: Also show binary path in the settings

More similar to svn, cc, bzr, and Gives the user a chance to specify
something different. Plan is to make this also work with remote setups
[and possibly a per-device option, or automatism]

Change-Id: I18c1a90642c9cbe2ef9419103f3919c4a19122e5
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/git/gitsettings.cpp

@@ -30,10 +30,13 @@ GitSettings::GitSettings()
     setAutoApply(false);
     setSettingsGroup("Git");
 
-    path.setDisplayStyle(StringAspect::LineEditDisplay);
     path.setLabelText(Tr::tr("Prepend to PATH:"));
+    path.setDisplayStyle(StringAspect::LineEditDisplay);
 
+    binaryPath.setLabelText(Tr::tr("Git Command"));
     binaryPath.setDefaultValue("git");
+    binaryPath.setExpectedKind(PathChooser::ExistingCommand);
+    binaryPath.setHistoryCompleter("Git.Command.History");
 
     pullRebase.setSettingsKey("PullRebase");
     pullRebase.setLabelText(Tr::tr("Pull with rebase"));
@@ -121,8 +124,9 @@ GitSettings::GitSettings()
         return Column {
             Group {
                 title(Tr::tr("Configuration")),
-                Column {
-                    Row { path },
+                Form {
+                    binaryPath, br,
+                    path, br,
                     winSetHomeEnvironment,
                 }
             },