[phpMyAdmin Developers] SQL parser handling

Hi all

current handlig of SQL parser code is less than optimal - it's developed in external repository and at "random" times copied to phpMyAdmin. That makes it quite hard to maintain - the fixes made in phpMyAdmin repository will be probably lost and it's hard to track what version went it.

Therefore I suggest:

- to move sql-parser git repo under phpmyadmin - to use sql-parser as submodule in phpmyadmin

This way, all development of SQL parser will be in single Git repository where all phpMyAdmin developers have access.

There are alternative approaches to handle this, but I find this best fitting our current model (no external dependencies).

[1]:https://github.com/udan11/sql-parser