Renamed configuration items in CamelCase style
Bugfix (warning: dereferencing type-punned pointer will break strict-aliasing rules)
Fixed printf formats for 32bits gcc
Merge branch 'patch/nfs_stats_with_network_plugin' into release/5.2.1
Merge branch 'plugin/write_top' into release/5.2.1
New release 5.2.1-20130516