Version change for 0.6.1

Release 0.6.1rc1

Release 0.6.0 final

Merge pull request Theano#325 from abergeron/switch

Switch gs and ls

Merge pull request Theano#291 from abergeron/for_release

Small changes for the release

Merge pull request Theano#166 from abergeron/take1_call32

Use 32-bit addressing in take1 when possible