Updated net/unbound to 1.5.1
Don't depend on implicit ${PREFIX}/lib.
Don't use -I without argument.
Add -ldl where appropiate and don't remove it if it isn't.
Don't use -I without argument.
Tell it where to find X to avoid depending on implicit ${PREFIX}/lib
addition.
Fix template use.
Forgotten patch: preserve LDFLAGS.
Fix PLIST with reality to make the dutch happy.
Provide library path for gmp and pari too.
Replace rename with l to work with both old and new wrappers.
Preserve environment.
Needs libtool.
Help finding libgb without implicit -L${PREFIX}/lib.
Ignore use of always non-null pointers as truth value.
Fix gmakeism.
Explicitly provide library search path for libelk.
Needs docbook-xsl and xsltproc.
Allow build on Linux to finish. Suggestion reported by Kamil Rytarowski on
tech-pkg@. Bug has been reported upstream and can be tracked here:

https://bugs.freedesktop.org/show_bug.cgi?id=87243
Fix build on CentOS 7 when building as root. *gasp*