[PATCH] Get rid of useless -fno-rtti for libubsan

[Yury Gribov]

 > I wonder if this can't be done through
 > just adding -fno-rtti to AM_CXXFLAGS and say
 > ubsan_handlers_cxx.% ubsan_type_hash.% : AM_CXXFLAGS += -frtti

Yup, that did the trick. Attaching modified patch.

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2013-11-28  Jakub Jelinek  <jakub@redhat.com>
	    Yury Gribov  <y.gribov@samsung.com>

	PR sanitizer/59106
	* ubsan/Makefile.am (AM_CXXFLAGS): Disable -frtti for files that
	don't need it.
	* ubsan/Makefile.in: Regenerated.