debian: Add versions to RPROVIDES

Recently, libspeexdsp-dev added RCONFLICTS = "speex-dev < 1.2rc2". where libspeexdsp is 1.2rc3. That all seems reasonable, except there is a problem.

debian.bbclass renames speex-dev to libspeex-dev and adds a "Provides: speex-dev" which the packaging backends duly note. The trouble is rpm sees that as having no version at all. This means that "speex-dev < 1.2rc2" conflicts with "speex-dev" and the -dev package simply cannot be installed.

We can't simply version all Provides for rpm since some dependencies clearly shouldn't be versioned (e.g. the locale ones).

The solution that seems to work best is to add the versions in debian.bbclass. If the backend doesn't like these, the backend can then strip them off (separate patch does this).

index 7a04318..04d3b01 100644
@@ -58,7 +58,7 @@ python debian_package_name_hook () {
         if newpkg and newpkg != pkg:
             provs = (d.getVar('RPROVIDES_' + pkg, True) or "").split()
             if pkg not in provs:
-                d.appendVar('RPROVIDES_' + pkg, " " + pkg)
+                d.appendVar('RPROVIDES_' + pkg, " " + pkg + " (=" + d.getVar("PKGV", True) + ")")
 
     def auto_libname(packages, orig_pkg):
         sonames = []