Initial debianization

First debianization of rpmlint.

Several lintian issues to solve, in shortcoming commits:

W: rpmlint source: syntax-error-in-dep5-copyright line 13: Continuation line outside a paragraph.
E: rpmlint: manpage-is-dh_make-template usr/share/man/man1/rpmdiff.1.gz
W: rpmlint: manpage-section-mismatch usr/share/man/man1/rpmdiff.1.gz:7 1 != SECTION

Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>