added Burmese (Myanmar) localization to admin and welcome apps.
Fix NULL values with SQLCustomType
fix search widget in SQLFORM.grid for SQLCustomType values
Initial tests for SQLCustomType
better SQLCustomType tests
test for compileapp
fix gis field case according to ignore_field_case
More gis tests
Make web2py's custom_import work with circular imports.
tests for lazy tables and substring expr
Merge pull request #549 from lminko/master

added Burmese (Myanmar) localization to admin and welcome apps.
Merge pull request #550 from ilvalle/fix-sqlcustomtype

Fix NULL values with SQLCustomType
Merge pull request #551 from ilvalle/fix-searchgrid

Fix search widget in SQLFORM.grid for SQLCustomType values
more tests, thanks Paolo
Merge branch 'ilvalle-test_pack'
test for w2p_pack/w2p_unpack
fix and initial tests for bigint
updated _extractall (python 2.4 support was dropped)
Merge pull request #555 from ilvalle/bigint

Fix and initial tests for bigint
Merge pull request #556 from ilvalle/test_pack

test for w2p_pack/w2p_unpack