tests: descending empty dirs works in all hgweb styles, test them too The tested feature was added to multiple hgweb styles in c21d236ca897, but only paper was tested. Let's test everything now, including monoblue, which only got the feature some 6 years late in e50d8b21f4f4.

tests: actualize the comment in test-hgweb-descend-empties.t The comment came together with the whole test file and the feature (descend empty dirs in hgweb) in c21d236ca897, but for some reason wasn't exactly accurate. Namely, there isn't e1 directory in the test at all, it obviously should say d1; and b1 didn't terminate at level 3, but does now.

revset: add fast path for _list() of integer revisions This can greatly speed up chained 'or' of integer revisions. 1) reduce nesting of chained 'or' operations 2) optimize to a list 3) fast path for integer revisions (this patch) revset #0: 0 + 1 + 2 + ... + 1000 1) wall 0.483341 comb 0.480000 user 0.480000 sys 0.000000 (best of 20) 2) wall 0.025393 comb 0.020000 user 0.020000 sys 0.000000 (best of 107) 3) wall 0.008371 comb 0.000000 user 0.000000 sys 0.000000 (best of 317) revset #1: sort(0 + 1 + 2 + ... + 1000) 1) wall 0.035240 comb 0.040000 user 0.040000 sys 0.000000 (best of 100) 2) wall 0.026432 comb 0.030000 user 0.030000 sys 0.000000 (best of 102) 3) wall 0.008418 comb 0.000000 user 0.000000 sys 0.000000 (best of 322) revset #2: first(0 + 1 + 2 + ... + 1000) 1) wall 0.028949 comb 0.030000 user 0.030000 sys 0.000000 (best of 100) 2) wall 0.025503 comb 0.030000 user 0.030000 sys 0.000000 (best of 106) 3) wall 0.008423 comb 0.010000 user 0.010000 sys 0.000000 (best of 319) But I admit that it is still slower than the spanset. revset #3: 0:1000 3) wall 0.000132 comb 0.000000 user 0.000000 sys 0.000000 (best of 19010)