shill: Naming and lint cleanup pass

Reduce some double-speak in IPAddress constants.  Do a cursory
glint pass and clean up a few no-brainer issues.

BUG=None
TEST=Re-run unit tests

Change-Id: I063cd72111bd1f6321f81c6c6591b9f51d87434d
Reviewed-on: http://gerrit.chromium.org/gerrit/7181
Reviewed-by: Paul Stewart <pstew@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>
diff --git a/dhcp_config.cc b/dhcp_config.cc
index 581528b..3764c19 100644
--- a/dhcp_config.cc
+++ b/dhcp_config.cc
@@ -206,7 +206,7 @@
                                     IPConfig::Properties *properties) {
   VLOG(2) << __func__;
   properties->method = flimflam::kTypeDHCP;
-  properties->address_family = IPAddress::kAddressFamilyIPv4;
+  properties->address_family = IPAddress::kFamilyIPv4;
   for (Configuration::const_iterator it = configuration.begin();
        it != configuration.end(); ++it) {
     const string &key = it->first;