Daily updater for phpMyAdmin module

Will check for phpMyAdmin updates once a day
1. Determines current version from RELEASE-DATE-n.n.n file
2. Determines latest version from phpmyadmin.net
3. If these values are not equal
3a. Backs up the current configuration file
3b. Downloads from SourceForge to Temp directory
3c. Extracts the archive
3d. Remove the current phpmyadmin
3e. Copies the new phpmyadmin
3f. puts the configuration file back
3g. removes the folder from temp