Import these patches from the GCC mainline: 2016-01-12 Andris Pavenis <andris.pavenis@iki.fi> * configure.ac: Enable LTO for DJGPP * configure: Regenerate 2016-01-24 Mikhail Maltsev <maltsevm@gmail.com> PR bootstrap/69329 * Makefile.tpl (BASE_FLAGS_TO_PASS): Add LSAN_OPTIONS. * Makefile.in: Regenerate. 2016-01-25 Aditya Kumar <aditya.k7@samsung.com> Sebastian Pop <s.pop@samsung.com> * Makefile.in: Regenerate. * Makefile.tpl: Export ISLVER. * configure: Regenerate. * config/isl.m4: Detect isl-0.15. 2016-01-29 Sebastian Pop <s.pop@samsung.com> * config/isl.m4: Add comments about isl-0.16. * configure: Regenerate.