configure: pass noyywrap to AC_PROG_LEX if using autoconf 2.70 or later
Raises minimum autoconf version from 2.60 to 2.64 for m4_version_prereq
Clears autoconf warning: configure.ac:39: warning: AC_PROG_LEX without either yywrap or noyywrap is obsolete ./lib/autoconf/programs.m4:743: _AC_PROG_LEX is expanded from... ./lib/autoconf/programs.m4:736: AC_PROG_LEX is expanded from... configure.ac:39: the top level
Signed-off-by: Alan Coopersmith alan.coopersmith@oracle.com