display_errors only forced to on when debug mode is on, closes #132
merging in changes from trunk 606e65e608f52f1089a33763c7766b11c1ec12b1
fixing tests (a bit), refs #133; really fixing dots in path names in build.xml, refs #118
Moved file copying etc. from AgaviPackageTask to build.xml. Closes #134.
Added regexp filter to build.xml to fix role="data" attributes from package.xml. Closes #135.
made DateValidator compatible with PHP >= 5.1.0, closes #143
merging in changes from branches/0.10 since 82b38144e405dd589f752c76a01f5d98afcdc75f