Changes:  - Reintroduced synchronized block, as shutdown might originate from multiple places, so this approach is more secure.  - Fixed shutdown using mysqladmin command config.
Changes:
 - Reintroduced synchronized block, as shutdown might originate from multiple places, so this approach is more secure.
 - Fixed shutdown using mysqladmin command config.

wix/wix-embedded-mysql,wix/wix-embedded-mysql