run-tests: install data files correctly
In 68964567e406 we began installing some data files in PREFIX/share.
When preparing to run the tests, run-tests.py uses --home="" in order
to work around home being set in a ~/.pydistutils.cfg file. This
somehow overwrites the --prefix option.
The result was that the share/ directory was installed in the top of
the Mercurial source tree.
% create test repository
adding a
adding b
adding c
% churn separate directories
user1 1 ***************************************************************
% churn all
user3 3 ***************************************************************
user1 3 ***************************************************************
user2 2 ******************************************
% churn up to rev 2
user2 2 ***************************************************************
user1 1 ********************************
% churn with aliases
alias3 3 **************************************************************
alias1 3 **************************************************************
user2 2 *****************************************
% churn with .hgchurn
alias3 3 **************************************************************
alias1 3 **************************************************************
user2 2 *****************************************
% churn with column specifier
user3 3 ***********************
user1 3 ***********************
user2 2 ***************
% churn by hour
06 1 *****************
09 2 *********************************
12 4 ******************************************************************
13 1 *****************
% churn with separated added/removed lines
user1 +3/-1 +++++++++++++++++++++++++++++++++++++++++--------------
user3 +3/-0 +++++++++++++++++++++++++++++++++++++++++
user2 +2/-0 +++++++++++++++++++++++++++
% changeset number churn
user1 4 ***************************************************************
user3 3 ***********************************************
user2 2 ********************************
adding foo
test 0