config: set default source build to prevent remove maintenance files
By default the 3.0 native source format will remove the following patterns when packaging:
-I*.a -I*.la -I*.o -I*.so -I.*.sw? -I*/*~ -I,,* -I.[#~]* -I.arch-ids -I.arch-inventory -I.be -I.bzr -I.bzr.backup -I.bzr.tags -I.bzrignore -I.cvsignore -I.deps -I.git -I.gitattributes -I.gitignore -I.gitmodules -I.gitreview -I.hg -I.hgignore -I.hgsigs -I.hgtags -I.mailmap -I.mtn-ignore -I.shelf -I.svn -ICVS -IDEADJOE -IRCS -I_MTN -I_darcs -I{arch}
(see dpkg-source --help)
Packaging "incomplete" sources which can silently trigger build errors on special cases.
By passing a fake pattern we can rule out the default behavior preventing build issues from the original (3.0 native) behavior.