R1:22ee8432d2bb

Allow `bin/storage adjust` to correct column types and collations

Summary:
Ref T1191. Allow `bin/storage adjust` to modify columns.

- Although `CREATE TABLE ... colname VARCHAR(64) CHARACTER SET BINARY` works fine, it's actually a trick. Adjust the binary columns for this.

Test Plan: See comment.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T6130, T6128, T6135, T6137, T6138, T6149, T6151, T1191

Differential Revision: https://secure.phabricator.com/D10598