histedit: store full node hash in rules
Previously histedit only stored the short version of the rule nodes in the
state. This meant that later we couldn't resolve a rule node to its full
form if the commit had been deleted from the repo.
Let's store the full form from the beginning.
Martin von Zweigbergk <martinvonz@google.com> [Fri, 16 Jan 2015 14:49:08 -0800] rev 24001
trydiff: order header-writing code in same order as output
Instead of inserting a line before the others header lines, move the
code that writes that line before the code that writes the other
lines.