Merge license TOML files in to a single data/ directory
Merge approved/, approved-content/, approved-documentation/,
approved-fonts/, and not-approved/ in to a single data/ subdirectory.
That required adjusting the "status" and "expression" fields:
1) expression is now just a string.
2) status is an array of strings noting the applicable status
identifiers for that license expression.
Signed-off-by: David Cantrell <dcantrell@redhat.com>