Deleted unnecessary variable

before:
        iso_format = iso_format = {'_data-w2p_datetime_format' : '%Y-%m-%d %H:%M:%S'}

now:
        iso_format = {'_data-w2p_datetime_format' : '%Y-%m-%d %H:%M:%S'}
reverted latest commit, Leonel is right, better to use closures
template converter for alternative delimiters
template converter for alternative delimiters
Added an optional render argument to as_trees that if true causes it to render the rows before building the tree
Fixed a bug where as_list was setting the compact value for the rows permanently instead of only temporarily while processing the rows.
Added fix - you cannot concatenate lists with tuples and sets and it was possible that this would happen
minor
Merge branch 'master' of git://github.com/web2py/web2py

Conflicts:
	applications/admin/languages/pt.py
	gluon/dal.py
Merge pull request #473 from omartrinidad/master

Deleted unnecessary variable
Merge pull request #474 from leonelcamara/master

Added an optional render argument to as_trees that if True causes it to ...
syncing
Merge branch 'master' of github.com:web2py/web2py into HEAD
Changed a condition in order to not show `None` if there is not error
typo in a comment
Refactored BaseAdapter delete method - Special case code for sqlite and spatialite should not be in the BaseAdapter it should be in SQLiteAdapter, this should also provide a negligible performance boost in delete operations for most adapters including SQLiteAdapter.
minor - Slight optimization use tablename directly instead of table._tablename
task dependencies, a little bit of refactoring
Merge pull request #477 from niphlod/enhancement/scheduler_deps

new feature (task dependencies) and a little bit of refactoring
Merge branch 'master' of github.com:web2py/web2py into HEAD