fix imagejpeg() parameter, should be NULL instead of empty string
Small typo in autoload config.

Fixed "Packges" to read "Packages".
Fix interbase limit issue for subqueries
Syntax fixes in documentation source
Merge pull request #2133 from TheDigitalOrchard/image_lib-imagejpeg

fix imagejpeg() parameter, should be NULL instead of empty string
Merge pull request #2136 from n1c/patch-1

[ci skip] Small typo in autoload config.
Merge pull request #2139 from timw4mail/develop

Fix interbase limit issue for subqueries
Merge pull request #2141 from vlakoff/develop

Syntax fixes in documentation source
Apply improvement proposed in #2142