Rename the install.php file to be in its pre-install state
Make methods static functions
Make base declaration the same as child declaration
Return value of new should not be assigned by reference. - Corrected.
Replace deprecated function assign_by_ref() with assignByRef()
Replace deprecated funcion clear_assign() with correct function call clearAssign()
Merge pull request #1 from timschofield/master

Fixes to the installer.