test: Resurrect tests with module support.
* mes/module/mes/misc.mes: Remove.
* mes/module/srfi/srfi-26.mes: Remove.
* module/mes/misc.scm (logf, stderr, pk, pke): Remove.
(mes?, guile?, guile-1.8?, guile-2?): Move to...
* module/mes/mes-0.mes: ...new file.
* module/mes/mes-0.scm (%program, pmatch-car, pmatch-cdr): New
variables.
* tests/guile.test: Remove (mes misc) use.
* tests/pmatch.test: Use (mes guile).
* tests/data/bar.scm,
tests/data/foo.scm,: New files.
tests/boot-6.test: New file, use them.
* build-aux/check-mes.sh (TESTS): Add it.
* mes/module/srfi/srfi-26.mes: Remove.
* mes/module/ice-9/rdelim.mes: New file.
* tests/scm.test ("builtin? car", "builtin? car", "builtin? cdr",
"builtin? cons", "builtin? cdr", "builtin? eq?", "builtin? eval"):
Remove.
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