Regenerate configure files by autoconf-2.69, automake-1.13.4

* configure: Regenerate (by autoreconf -vif using autoconf-2.69,
automake-1.13.4 and libtool-2.4.2).
* INSTALL: Likewise.
* Makefile.in: Likewise.
* aclocal.m4: Likewise.
* compile: Likewise.
* config.guess: Likewise.
* config.sub: Likewise.
* depcomp: Likewise.
* doc/Makefile.in: Likewise.
* install-sh: Likewise.
* missing: Likewise.
* mkinstalldirs: Likewise.
* src/Makefile.in: Likewise.
* src/atomic_ops/Makefile.in: Likewise.
* src/atomic_ops/sysdeps/Makefile.in: Likewise.
* tests/Makefile.in: Likewise.
* test-driver: New generated file.
.gitignore: Ignore test*.log, test*.trs