Regenerate configure files by new automake (v1.14.1), libtool (v2.4.2.418)

* configure: Regenerate (by autoreconf -vif using autoconf-2.69,
automake-1.14.1 and libtool-2.4.2.418).
* INSTALL: Likewise.
* Makefile.in: Likewise.
* aclocal.m4: Likewise.
* config.guess: Likewise.
* config.sub: Likewise.
* doc/Makefile.in: Likewise.
* missing: Likewise.
* src/Makefile.in: Likewise.
* src/atomic_ops/Makefile.in: Likewise.
* src/atomic_ops/sysdeps/Makefile.in: Likewise.
* src/config.h.in: Likewise.
* test-driver: Likewise.
* tests/Makefile.in: Likewise.
[7.2f]

Bump version to 7.2f in README; update ChangeLog