[binutils-gdb] Exclude target-zlib if target-libjava isn't built

[sergiodj+buildbot@redhat.com]

*** TEST RESULTS FOR COMMIT 091021faaa699c11dd50d9ff56d8713953666f65 ***

Author: H.J. Lu <hjl.tools@gmail.com>
Branch: master
Commit: 091021faaa699c11dd50d9ff56d8713953666f65

Exclude target-zlib if target-libjava isn't built
	* configure.ac (target_configdirs): Exclude target-zlib if
	target-libjava isn't built.
	* configure: Regenerated.