Add inherits to postgres. Updated dialect-specific methods.

[joeframbach]

Allow postgres tables to inherit. http://www.postgresql.org/docs/9.1/static/ddl-inherit.html

[bendrucker]

Can you explain the MyISAM related stuff?

[joeframbach]

The engine stuff was added long ago (0f38f04) but I couldn't find a unit test around it. I added two tests for "engine": 1. Make sure MySql uses "engine". 2. Make sure PostgreSQL ignores "engine".

Adding "inherits" to PostgreSQL was similar to "engine", so I followed the same principles.

[bleupen]

+1

[rogerzklotz]

Any chance this is going to be added? I'd be happy to make any changes that are needed to get issues resolved, if no one else can/wants to.

[joeframbach]

@MrBucket I've updated to resolve conflicts.

[rogerzklotz]

@joeframbach Thank you for updating.
@bendrucker Is there any chance this can be merged into master? I think Joe or I would be happy to make any changes necessary to make this happen. Thank you!

[rhys-vdw]

@MrBucket @joeframbach Hadn't seen this one before. I'll merge this if we can remove the /lib folder that is no longer under version control. Sorry for the back and forth!

[elhigu]

I started going through old pull requests and get them merged if possible or close otherwise if they are not going to be finished.

@joeframbach Nice feature! If you rebase this one more time to top of master, I'll make sure this gets merged.

[elhigu]

@MrBucket If you still like to finish this, rebasing this to top of master and removing code from /lib should be enough to get this merged. Code did look good.

I'll leave this open for one more month and if still pending, close the PR and move this to issues to wait for finishing.

[joeframbach]

I've updated but Travis seems confused. Gonna close and re-open to kick off Travis.

[elhigu]

@joeframbach Awesome, thanks!