Merge branch 'micro' into maint * micro: tests: avoid a couple of extra sleep with GNU make NEWS: document testsuite work for 1.13.3 lint: remove a couple of obsolete syntax checks lint: cosmetics: use #-comments, not ##-comments lint: cosmetics: some reordering lint: recipes of syntax check require GNU grep; ensure it is used lint: better name for a syntax check tests: rename $am_make_rc_got -> $am_make_rc tests: ensure $required is not set too late Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>