Move _LIBLDOPTS and LDFLAGS to a spot behind LDADD when making a
shared library.  This is done so that -L options pointing into
DESTDIR will come after -L options pointing into our object tree
for shared libraries this shared library depends on.

This makes a difference when shared library major numbers are bumped
(as was recently done in our tree), and you build into an already-
populated DESTDIR, because otherwise the old major version shared
libraries will be picked up, because the new ones have not yet been
installed at this stage. This will in all probability lead to
conflicts later on when linking programs, where one would try to
mix new and old major versions for the same shared library.

I *hope* this will not have any negatively impact by moving other
order-dependent options around; local tests with rebuilds did not
uncover any problems I could see.

OK'ed by lukem@


(he)