w32: Fix for make check.
* common/Makefile.am (module_tests): Exclude t-exechelp and t-exectool. * common/t-stringhelp.c (mygetcwd): Convert '\' to '/'. * tests/cms/Makefile.am: Add $(EXEEXT). * tests/gpgme/Makefile.am: Likewise. * tests/migrations/Makefile.am: Likewise. * tests/openpgp/Makefile.am: Likewise.
- Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>