git-interface: Factor out configuration file parsing

Add a new module that automatically locates the configuration file and
provides methods to obtain the values of configuration options.

Use the new module instead of ConfigParser everywhere.

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

git-interface/config.py

@@ -0,0 +1,27 @@
+import configparser
+import os
+
+_parser = None
+
+
+def _get_parser():
+    global _parser
+
+    if not _parser:
+        _parser = configparser.RawConfigParser()
+        path = os.path.dirname(os.path.realpath(__file__)) + "/../conf/config"
+        _parser.read(path)
+
+    return _parser
+
+
+def get(section, option):
+    return _get_parser().get(section, option)
+
+
+def getboolean(section, option):
+    return _get_parser().getboolean(section, option)
+
+
+def getint(section, option):
+    return _get_parser().getint(section, option)