wip/slurm build on NetBSD 7.1.1

[Jason Bacon <outpaddling%yahoo.com@localhost>]

I'm hitting a build issue with wip/slurm, where the configure script 
fails to insert the proper link flags on NetBSD 7.1.1, while working 
fine on CentOS.

I can hack my way through the build phase by adding the following in 
post-configure:

-L${WRKSRC}/src/api/.libs -lslurmfull -L${WRKSRC}/src/db_api/.libs -lslurmdb

The SUBST entry for this is in the Makefile, but commented out.

Wondering if there's an autoconf/lbtool wiz out there who has seen 
something like this and might have a suggestion.

Latest is committed to wip.

Thanks,

    JB