[php:plugin] edit class comment of Normalizer
[php:plugin] add plugin Sanitizer
[php:connector] Remove null & stripslashes applies on "magic_quotes_gpc"
Merge branch '2.x' into 2.1
[php:plugin:Sanitizer] "Null character" is removed by input checking

ref. @8005f9b0 [php:connector] Remove null & stripslashes applies on "magic_quotes_gpc"