Put AM_V_GEN etc. first

Put AM_V_GEN etc. first

With the recent changes to src/verbose.mk.in, it’s more important
to be consistent about putting AM_V_GEN and similar macros at the
start of a rule’s recipe, since ‘make’ now outputs the diagnostic
before it executes the recipe rather than the shell outputting it.
Most of the uses were already this way, but there were a few
outliers.  Problem reported by Pip Cet.
* Makefile.in (${srcdir}/info/dir):
* admin/unidata/Makefile.in (${unidir}/charprop.el, ${unifiles})
(${unidir}/emoji-labels.el):
* lib/Makefile.in (libgnu.a, libegnu.a):
* lisp/Makefile.in (TAGS):
* src/Makefile.in (lisp.mk, Emacs):
* test/Makefile.in (%.log, $(test_module)):
Put AM_V_GEN and similar macros first.