tests/migrations: Fix distcheck.
* tests/migrations/Makefile.am (TESTS): Rename test. (TEST_FILES): Update list. (EXTRA_DIST): Add common.scm. * tests/migrations/common.scm (GPGTAR): New variable. (dearmor): Rename and untar archive. * tests/migrations/extended-private-key-format.scm: Rename. (setup): Update. * tests/migrations/extended-pkf.tar.asc: New file. * tests/migrations/extended-private-key-format.gpghome: Delete. * tests/migrations/from-classic.gpghome: Likewise. * tests/migrations/from-classic.scm (setup): Update. * tests/migrations/from-classic.tar.asc: New file.
- Signed-off-by: Justus Winter <justus@g10code.com>