tests/test-merge4.out

Extended test case to test dirstate length bug fixed in a7e95e3606c7.

+ hg init
+ hg add a
+ hg commit -m commit #0 -d 0 0
+ hg add b
+ hg commit -m commit #1 -d 0 0
+ hg update 0
+ hg add c
+ hg commit -m commit #2 -d 0 0
+ hg update -m 1
+ hg commit -m commit #3 -d 0 0