DB cleanup: Remove some non-manpages & fix wrongly-detected locales

sql/update-2016-10-16.sql

@@ -0,0 +1,19 @@
+-- Various non-manpages
+DELETE FROM man
+ WHERE filename ~ '/Makefile\.(in|am)$'
+    OR filename ~ '/\.cvsignore(\.gz)?$'
+    OR filename !~ '/[^/]*\.[^/]*$'
+    OR filename ~ '/man\.tmp$';
+
+-- Wrong locales, found with:
+--   SELECT DISTINCT Locale FROM man ORDER BY locale;
+UPDATE man SET locale = NULL
+ WHERE locale = '5man'
+    OR locale = 'c'
+    OR locale ~ '^man.?$'
+    OR locale ~ '^Man-Part[12]$';
+
+-- Man page containing only a '$1'. Likely a build failure in earlier FreeBSD releases.
+DELETE FROM man WHERE hash = '\x5ea7b8101325c704551852f70b652e0a2b0d7c12';
+
+DELETE FROM contents c WHERE NOT EXISTS(SELECT 1 FROM man m WHERE m.hash = c.hash);