vim: Add quickfix window statusline

Closes #419

powerline/config_files/config.json

@@ -36,7 +36,8 @@
 			"theme": "default",
 			"local_themes": {
 				"cmdwin": "cmdwin",
-				"help": "help"
+				"help": "help",
+				"quickfix": "quickfix"
 			}
 		},
 		"wm": {

powerline/config_files/themes/vim/quickfix.json

@@ -0,0 +1,36 @@
+{
+	"segment_data": {
+		"file_name": {
+			"contents": "Location List"
+		}
+	},
+	"segments": {
+		"left": [
+			{
+				"type": "string",
+				"name": "file_name",
+				"draw_soft_divider": false
+			},
+			{
+				"type": "string",
+				"highlight_group": ["background"],
+				"draw_soft_divider": false,
+				"draw_hard_divider": false,
+				"width": "auto"
+			}
+		],
+		"right": [
+			{
+				"type": "string",
+				"name": "line_current_symbol",
+				"highlight_group": ["line_current_symbol", "line_current"]
+			},
+			{
+				"name": "line_current",
+				"draw_soft_divider": false,
+				"width": 3,
+				"align": "r"
+			}
+		]
+	}
+}

powerline/matchers/vim.py

@@ -13,3 +13,7 @@ def help(matcher_info):
 def cmdwin(matcher_info):
 	name = matcher_info['buffer'].name
 	return name and os.path.basename(name) == '[Command Line]'
+
+
+def quickfix(matcher_info):
+	return str(getbufvar(matcher_info['bufnr'], '&buftype')) == 'quickfix'