Log Message:
Update the NetBSD binaries to ones not including the "docs" part.

Also, pull over the patched install.sh script from the main package,
for quite a lot faster installation, also for the benefit of the
upstream-delivered binaries. (Fix submitted upstream.)

Use the nb1 version suffix on the NetBSD binaries (one-time job for
1.52.1, to be removed on next go-around), but they still extract to
the non-nb1 work directory, so some adjustment needed for that.

Bump PKGREVISION.