check git version requirements

This allows v1 tests to continue working on git 1.8.0 for
now.  This allows git 2.1.4 packaged with Debian 8 ("jessie")
to run old tests, at least.

I suppose it's safe to drop Debian 7 ("wheezy") due to our
dependency on git 1.8.0 for "merge-base --is-ancestor".

Writing V2 repositories requires git 2.6 for "get-mark"
support, so mask out tests for older gits.

1 files changed, 2 insertions, 0 deletions

diff --git a/t/watch_maildir_v2.t b/t/watch_maildir_v2.t
index 3b5d2b85..5f968919 100644
--- a/t/watch_maildir_v2.t
+++ b/t/watch_maildir_v2.t
@@ -5,6 +5,8 @@ use File::Temp qw/tempdir/;
 use PublicInbox::MIME;
 use Cwd;
 use PublicInbox::Config;
+require './t/common.perl';
+require_git(2.6);
 my @mods = qw(Filesys::Notify::Simple PublicInbox::V2Writable);
 foreach my $mod (@mods) {
         eval "require $mod";