[PATCH] git diff: rename test that had a conflicting name

In 86140d5 the new test t4041-diff-submodule.sh was introduced although
t4027-diff-submodule.sh already existed. Rename the newer test to
t4041-diff-submodule-option.sh to fix that.

Signed-off-by: Jens Lehmann <redacted>
---
 ...submodule.sh => t4041-diff-submodule-option.sh} |    0
 1 files changed, 0 insertions(+), 0 deletions(-)
 rename t/{t4041-diff-submodule.sh => t4041-diff-submodule-option.sh} (100%)

diff --git a/t/t4041-diff-submodule.sh b/t/t4041-diff-submodule-option.sh
similarity index 100%
rename from t/t4041-diff-submodule.sh
rename to t/t4041-diff-submodule-option.sh
-- 
1.7.1.269.g31fb8