merge: move messages about possible conflicts a litte earlier I actually wanted to reduce the amount of code around the call to applyupdates(), so I tried moving these warnings a little earlier, and I think it makes the output make a little more sense (see changes to test cases).

from mercurial import util

def makedate():
    return 0, 0
def getuser():
    return 'bob'

# mock the date and user apis so the output is always the same
def uisetup(ui):
    util.makedate = makedate
    util.getuser = getuser