convert: svn: check for branch movement in any log entry, not just the first.
This fixes, for example,
r4151
D /branches
A /project/branches (from /branches:4150)
A /project/tags (from /tags:4150)
A /project/trunk (from /trunk:4150)
D /tags
D /trunk
#!/bin/sh
hg init
echo This is file a1 > a
hg add a
hg commit -m "commit #0" -d "1000000 0"
touch b
hg add b
rm b
hg commit -A -m"comment #1" -d "1000000 0"