Revert "More needed to get rid of "lib" in "libwsutil" on Windows."

This reverts commit 28719a4e4e01b478889dab9611fed517e506360e.

Most of the change to remove "lib" seems to work, but the list of libraries to sign appears not to be in the source repository, so I can't make that step work.

Change-Id: I32e400593e8a39f582cc702df34eea7f6e9e722a
Reviewed-on: https://code.wireshark.org/review/2972
Reviewed-by: Guy Harris <guy@alum.mit.edu>