Cleaning up VDrift source tree

[BiGBeN87]

I toyed around with time and git and tryed to answer:

* on a large repository like the entire vdrift data repo, make a single change to a .png file somewhere deep and check the time taken to make a git commit -a or svn ci

Blind test on a fresh repository:

Code:

$ time git status
# On branch master
nothing to commit (working directory clean)

real   0m0.177s
user   0m0.060s
sys    0m0.100s

Git does not seem to have trouble with finding a single changed bit deep in the tree:

Code:

$ chmod +x cars/FF/interior.png

$ time git commit -a -m 'testing commit -a time'
[master c91cd97] testing commit -a time
1 files changed, 0 insertions(+), 0 deletions(-)
mode change 100644 => 100755 cars/FF/interior.png

real   0m0.266s
user   0m0.100s
sys    0m0.090s

$ time git status
# On branch master
# Your branch is ahead of 'origin/master' by 1 commit.
#
nothing to commit (working directory clean)

real   0m0.139s
user   0m0.080s
sys    0m0.050s