PhpMyCodeGenerator 2.9.0 Released

This release fine-tunes and adds some instructions:
- Update the instructions PROC_STDIN, PROC_STDOUT and PROC_STDERR to support echoing the string sent to or received from a process, with the script "script - execute command" updated to use the new echo_flag parameter.
- Improve the instruction UNSET to support unsetting multiple variables.
- Add some IF-like instructions, IF_M (deprecated RE_MATCH), ELSEIF_M, IF_E, ELSEIF_E, for string match and comparison, with the example script "script - execute command" updated to use IF_M instead of RE_MATCH.
- Add an instruction ODBC_PROCEDURES for retrieving procedure information from DB.
- Add a result_type parameter to ODBC_EXEC to control what type of result set array to return, with the example script "script - show all data in db" updated to use the new parameter.
- Update the installer scripts "script - inst SeleniumServer" and "script - install Zend Gdata" to install the latest version of Selenium Server and Zend Gdata library.
- Add two instructions CLIP_GET and CLIP_PUT to support clipboard operation on Windows, with the example script "script - clipboard by AutoIt" updated to test to use the new instructions.