generated create_table_comment doesn't use repr for the comment parameters

[RazerM]

I'm on alembic 1.0.8, I think #529 only dealt with the column comments

[zzzeek]

Sorry I look at alembic like once a month, which parameters on which functions please? examples / PR with tests

[RazerM]

Sorry I should have provided more info in the first place:

op.create_table_comment('table_name', 'this quote isn't escaped')
op.drop_table_comment('table_name', existing_comment='this quote isn't escaped')

It may be both comment and existing_comment on both of those functions. I only had examples like above.

[zzzeek]

a PR w test support would be most helpful

[sqla-tester]

Mike Bayer has proposed a fix for this issue in the master branch:

Use repr for table comment in create_table_comment / drop_table_comment https://gerrit.sqlalchemy.org/1464