MAINTAIN-sm83

On CentOS 7, autotools are too old. Need to install newer version with:
 yum install autotools-latest

Autoreconf binutils this way:
 # cd <binutils-project-topdir>
 scl enable autotools-latest autoreconf
 cd bfd
 scl enable autotools-latest autoreconf
 cd ..
 cd opcodes
 scl enable autotools-latest autoreconf
 cd ..
 cd gas
 scl enable autotools-latest autoreconf
 cd ..
 cd ld
 scl enable autotools-latest autoreconf
 cd ..
 rm -rf Makefile bfd/autom4te.cache/ bfd/config.cache bfd/config.log config.log config.status gas/autom4te.cache/ \
        intl/Makefile intl/config.cache intl/config.h intl/config.intl intl/config.log intl/config.status \
        ld/autom4te.cache/ libiberty/Makefile libiberty/config.cache libiberty/config.h libiberty/config.log \
        libiberty/config.status libiberty/stamp-h libiberty/testsuiteMakefile opcodes/autom4te.cache/ serdep.tmp \
        autom4te.cache/ binutils/config.cache zlib/config.cache etc/config.cache opcodes/config.cache gprof/config.cache \
        gas/config.cache ld/config.cache