* dhruvgoel92/ticket/11050:
[ticket/11050] make all properties protected in all search backends
[ticket/11050] get_common_words() returns empty array for sphinx
[ticket/11050] fix tidied search query docblock language
[ticket/11050] fix min/max length docblock language
[ticket/11050] multi sentences separated by period in docblocks
[ticket/11050] fix separated spelling in docblock
[ticket/11050] fix split words doc block language
[ticket/11050] remove class word from docblocks
[ticket/11050] add missing @var in native search
[ticket/11050] replace user by phpbb_user
[ticket/11050] fix minor comment/docblocks issues
[ticket/11050] add access specifiers to native search properties
[ticket/11050] fix docblocks with description before @var
[ticket/11050] add missing @var
[ticket/11050] remove common_words property from sphinx
[ticket/11050] add access specifiers to sphinx search properties
[ticket/11050] add access specifiers to mysql search properties
[ticket/11050] add access specifiers to pgsql search properties