display_errors only forced to on when debug mode is on, closes #133
merging in changes from trunk 585cfadb5c2709add860a994b2426671f794a9e9
fixing tests (a bit), refs #134; really fixing dots in path names in build.xml, refs #119
Moved file copying etc. from AgaviPackageTask to build.xml. Closes #135.
Added regexp filter to build.xml to fix role="data" attributes from package.xml. Closes #136.
made DateValidator compatible with PHP >= 5.1.0, closes #145
merging in changes from branches/0.10 since 3554179717190d8bc5135c51f0a2bb5367bc7d0c