[Integrated] RFR: vcs: handle nested repositories

[Erik Helin]

Changeset: da335bd7
Author:    Erik Helin <ehelin at openjdk.org>
Date:      2020-03-05 12:03:42 +0000
URL:       https://git.openjdk.java.net/skara/commit/da335bd7

vcs: handle nested repositories

Reviewed-by: rwestberg

! vcs/src/main/java/org/openjdk/skara/vcs/Repository.java
! vcs/src/test/java/org/openjdk/skara/vcs/RepositoryTests.java