reduce dependencies in the prep stage

Don't depend on configure and autotools etc. in prep.
Instead run %configure from the more standard %build stage.

libbsd.spec

@@ -42,9 +42,8 @@ configured using "pkg-config --libs libbsd-ctor".
 %setup -q
 %patch1 -p1 -b .deprecated
 
-%configure
-
 %build
+%configure
 make CFLAGS="%{optflags}" %{?_smp_mflags} \
      libdir=%{_libdir} \
      usrlibdir=%{_libdir} \