Add SQL Server support
removed flavour for sqlserver
Merge pull request #345 from diego-vieira/master

Add SQL Server support
No longer allow setup::add to reset a db connection.
Merge branch 'master' of github.com:gabordemooij/redbean
Fix test.
Fix test.
Fix test.
Fix test.
Via() should reload shared list. Close #348.
Support joins in with.
Don't trigger warning over non-existant parent in preloader. Closes #351.
Option to allow trees (new default in 4.0).
Added tests for dup() trees.
Fixed replica.
Speed up load().
Add stacktrace to exceptions. Closing #349.
Fix cache issue