Bug 14097 - Correct noise under Debian

Bug 14097 - Correct noise under Debian

The first four patches do not create any noise under Ubuntu 14.04 LTS.

Running on Debian Jessie:
[SNIP]
keys on reference is experimental at t/db_dependent/UsageStats.t line 88.
keys on reference is experimental at t/db_dependent/UsageStats.t line 106.
keys on reference is experimental at t/db_dependent/UsageStats.t line 119.
keys on reference is experimental at t/db_dependent/UsageStats.t line 136.
keys on reference is experimental at t/db_dependent/UsageStats.t line 153.
keys on reference is experimental at t/db_dependent/UsageStats.t line 162.
keys on reference is experimental at t/db_dependent/UsageStats.t line 587.
[SNIP]

Instead of having 'keys $foo->{bar}', 'keys %{$foo->{bar}}' was used.

TEST PLAN
---------
1) On a DEBIAN system (Jessie gives above messages)
   apply the first 4 patches interactively.
2) $ prove t/db_dependent/UsageStats.t
   -- trigger noise like above.
3) apply this patch
4) $ prove t/db_dependent/UsageStats.t
   -- no noise triggered.
5) koha qa test tools

Signed-off-by: Indranil Das Gupta (L2C2 Technologies) <indradg@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com
(cherry picked from commit 3387a6114b70cf8de021c4cdf84a687e629efc82)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>