* fixes #303: tablesort.js not found in Diagnosis and Coverager
* fixes #297: segv on startup under sparc, ini setting overflow
* fixes #296: Multiple instances of the same software causes PHP "cannot redeclare class" errors when readonly_protection is not in use
* fixes #296: (PHP5.4+ only bug), racecondition Multiple instances of the same software causes PHP "cannot redeclare class" errors when readonly_protection is not in use
* fixes #301: refix locking impl
* fixes #307: compatible with Zend Debugger which requires to be installed after Zend Extension Manager