API CHANGE Removed File->resetFilename(), use File->updateFilesystem() to update the filesystem, and File->getRelativePath() to just update the "Filename" property without any filesystem changes (emulating the old $renamePhysicalFile method argument in resetFilename())
API CHANGE Removed File->autosetFilename(), please set the "Filename" property via File->getRelativePath()
MINOR Added unit tests to FileTest and FolderTest (some of them copied from FileTest, to test Folder behaviour separately) (from r107273)
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@112563 467b73ca-7a2a-4603-9d3b-597d59a354a9