arel load errors running active_record tests

Cannot run activerecord tests on rails 3.0 without arel gem installed. Perhaps more consistent to add it to the load_path where required in active_record.rb?

Running rake install mostly works but the gemspec is somewhat between 0.3.pre and 0.2.pre.


/Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in gem_original_require': no such file to load -- arel (LoadError)

from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require'
from ./lib/active_record.rb:33
from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require'
from ./test/cases/helper.rb:15
from ./test/cases/active_schema_test_postgresql.rb:1:in `require'
from ./test/cases/active_schema_test_postgresql.rb:1
from /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake/rake_test_loader.rb:5:in `load'
from /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake/rake_test_loader.rb:5
from /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake/rake_test_loader.rb:5:in `each'
from /Library/Ruby/Gems/1.8/gems/rake-0.8.7/lib/rake/rake_test_loader.rb:5

Errors running test_postgresql