hgweb file: fixed left-justified line numbers on IE v6.0
IE (v6.0) seemed to squash the spaces surrounding the line
numbers, making them appeared as left- instead of being
right-justified.
Testing with IE v6.0 and Firefox 1.0.6.
1:3aa14bbc23d9
0:8633637036c1
3aa14bbc23d9 tip
8633637036c1
8633637036c1+
8633637036c1
3aa14bbc23d9 tip
merging file1
3aa14bbc23d9 tip
3aa14bbc23d9 tip
3aa14bbc23d9 tip
3aa14bbc23d9 tip