GLIBCPP_TOPREL_CONFIGURE.
* aclocal.m4: Likewise.
* configure.in: Call it before AC_CANONICAL_SYSTEM.
* configure: Regenerate.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@55001 138bc75d-0d04-0410-961f-82ee72b054a4