Update dependencies

[dveeden]

The biggest change is that the MySQL driver removed strict-mode which changes how warnings are handled.

Closes #25

[dveeden]

/cc @morgo

[dveeden]

This is making similar changes as #33 except for the actual GBK part

[zimulala]

It seems this PR and #33 content is repeated.

[dveeden]

Not closing this as planned, even while #33 has been merged.

This updates a few more deps (from go get -u ./...) and fixes the regression from #33:

[dvaneeden@dve-carbon mysql-tester]$ git rev-parse HEAD
33200960bc1486259caceae3ceb08b346c39e9f6
[dvaneeden@dve-carbon mysql-tester]$ make build
go build -o mysql-tester ./src
# github.com/pingcap/mysql-tester/src
src/main.go:148:26: undefined: mysql
make: *** [Makefile:6: build] Error 2
[dvaneeden@dve-carbon mysql-tester]$ git checkout update_deps 
Switched to branch 'update_deps'
Your branch is up to date with 'origin/update_deps'.
[dvaneeden@dve-carbon mysql-tester]$ git rev-parse HEAD
0ee1edf56e749a58fe3399e8b884751c7b36bf3d
[dvaneeden@dve-carbon mysql-tester]$ make build
go build -o mysql-tester ./src
[dvaneeden@dve-carbon mysql-tester]$

/cc @zimulala @bb7133 @morgo

[morgo]

LGTM

(I don't think I have review privileges in this repo.)

[zimulala]

LGTM

[hawkingrei]

LGTM