configure.ac (setobjs, msdosdjgpp): Move a-priori setting of existing and required library functions to...

* configure.ac  (setobjs, msdosdjgpp): Move a-priori setting of
existing and required library functions to with_target_subdir
section, so that the native build does detect them at configure
time.
* configure: Regenerated.

From-SVN: r146056