modifications to have relative src for media in the xml ldt of a project. - Migration in order to set all the project ldt with the new values in the xml. If the media has a content that doesn't exist, the media is erased. If the project has no valid media, the project is deleted. There is a test in project_tests. - The migration uses the command : set_projectldtiri - The command set_projectldtiri uses the function in utils relative_src_xml that returns an xml. The command deletes the projects that have no ldt or the ldt isn't valid (empty string) - Modifications in lignesdetemps to have absolute urls in the xml when we open a project or in the research when we display the results in lignes de temps

syntax: regexp
.*\.pyc$
^src/ldt/Ldt\.egg-info$
^src/ldt/dist$
^virtualenv/setup/project-boot\.py$
^virtualenv/setup/env/
^src/ldt/build$
^src/ldt/ldt\.egg-info$
^src/ldt/distribute-0\.6\.14\.tar\.gz$
^src/ldt/distribute-0\.6\.14-py2\.6\.egg$
^src/ldt/MANIFEST\.in$
^src/ldt/MANIFEST$
^\.pydevproject$
^\.settings/org\.eclipse\.core\.resources\.prefs$
\.DS_Store$