Add Ralph to uploaders, fix numerous lintian warnings
 * debian/control: improve Description fields
 * debian/copyright: make GPL version explicit
 * debian/rules: add new mandatory build-arch and build-indep targets
 * debian/source/format: added
 * debian/control: bump Standards-Version to 3.9.4
 * dh_rtems_lintian: fix typo
Add basic support for Multi-Arch shared library locations