Merged purge code in remove, configurable transaction regpkgdb flushing.

See the NEWS file for info.

etc/xbps.conf

@@ -2,24 +2,30 @@
 # ============================
 #
 # Root directory.
-#rootdir = /
+#RootDir = /
 #
 # Cache directory to store downloaded binary packages.
 # If string begins with '/' it will be treated as full path,
 # otherwise it will be treated as relative to the root-directory.
-#cachedir = var/cache/xbps
+#CacheDir = var/cache/xbps
 #
 # Default global limit of cached connections when fetching files.
-#fetch-cache-connections = 10
+#FetchCacheConnection = 10
 #
 # Default per-host limit of cached connections when fetching files.
-#fetch-cache-connections-per-host = 3
+#FetchCacheConnectionPerHost = 3
 #
 # Default timeout limit for connections, in seconds.
-#fetch-timeout-connection = 30
+#FetchTimeoutConnection = 30
 #
 # Enable syslog messages, set the value to false or 0 to disable.
-#syslog = true
+#Syslog = true
+
+# Number of packages to be processed in a transaction to trigger
+# a flush to the master package database. Set it to 0 to make it
+# only flush at required points.
+#
+#TransactionFrequencyFlush = 25
 
 # Repositories.
 #