This is necessary to be able to collect shlib-provides for 32bit pkgs,
which are autogenerated.
The strip-and-debug-pkgs hook now just does what its name mentions:
strip binaries and create -dbg pkgs.
That was the missing piece to generate proper dependencies in 32bit
packages with subpkgs that depended in other subpkgs.
For example kmod: libkmod and libkmod-devel. libkmod-devel was being processed
before libkmod, and due to missing shlib-provides a dependency to the 64bit
package was generated.
