MySQL adapter boolean type should be BIT, not TINYINT

[andybellenie]

Change the adapter code for MySQL to:

<cfset variables.sqlTypes['boolean'] = {name='BIT'}>

[jordanclark]

I agree, the current implementation fo TINYINT(1) appears similar to BIT because of the view, but it's actually still stored as a tinyint datatype. My open fork/pull request has a fix for this.