localrepo: changed revs to use spanset instead of baseset
Performance benchmarking:
$ time hg log -qf -l1
...
real 0m1.420s
user 0m1.249s
sys 0m0.167s
$ time ~/local/hg/hg log -qf -l1
...
real 0m0.719s
user 0m0.614s
sys 0m0.103s
$ hg init
$ python -c 'file("a", "wb").write("confuse str.splitlines\nembedded\rnewline\n")'
$ hg ci -Ama -d '1 0'
adding a
$ echo clean diff >> a
$ hg ci -mb -d '2 0'
$ hg diff -r0 -r1
diff -r 107ba6f817b5 -r 310ce7989cdc a
--- a/a Thu Jan 01 00:00:01 1970 +0000
+++ b/a Thu Jan 01 00:00:02 1970 +0000
@@ -1,2 +1,3 @@
confuse str.splitlines
embedded\r (no-eol) (esc)
newline
+clean diff