ActiveRecord's use of RAILS_ROOT for sqlite drop db operation
ActiveRecord's use of RAILS_ROOT for sqlite drop db operation

Quick change from RAILS_ROOT to Merb.root so that dropping databases
now works with sqlite.

Signed-off-by: Michael S. Klishin <17b9e1c64588c7fa6419b4d29dc1f4426279ba01@novemberain.com>

merb/merb_activerecord