added linkchecker module and hook to check landing pages for broken links

CHANGELOG.txt

+WCM Base 7.x-1.x, 2016-03-03
+----------------------------
+- WCM Base: Added Linkchecker module.
+- WCM Panels Settings: Added hook to check panel panes for broken links.
+
 WCM Base 7.x-1.x, 2016-03-02
 ----------------------------
 - WCM Base: Updated Fieldable Panels Panes to 1.8 (security release).

wcm_base.make

@@ -65,6 +65,10 @@ projects[jquery_update][version] = 2.7
 projects[jquery_update][subdir] = contrib
 projects[jquery_update][patch][2241973] = http://drupal.org/files/issues/jquery_update-autoheight_fix-2241973-7.patch
 
+projects[linkchecker][version] = 1.2
+projects[linkchecker][subdir] = contrib
+projects[linkchecker][patch][1946252] = http://drupal.org/files/issues/linkchecker-hooks-1946252-4.patch
+
 projects[mailsystem][version] = 2.34
 projects[mailsystem][subdir] = contrib