re PR other/56780 (--disable-install-libiberty still installs libiberty.a)

re PR other/56780 (--disable-install-libiberty still installs libiberty.a)

	PR other/56780
	* libiberty/configure.ac: Move test for --enable-install-libiberty
	outside of the 'with_target_subdir' test so that it actually gets
	run.  Add output messages to show the test result.
	* libiberty/configure: Regenerate.
	* libiberty/Makefile.in (install_to_libdir): Place the
	installation of the libiberty library in the same guard as that
	used for the headers to prevent it being installed unless
	requested via --enable-install-libiberty.

From-SVN: r199570