graphlog: handle old-style --rev values --rev options cannot be merged into a single revset because we do not know if they are valid revset or old-style revision specifications, like 'foo-bar' tags. Instead, a base revision set is generated with scmutil.revrange() then filtered with the revset built from log options. It also fixes incorrect or hostile expressions passed in --rev.

test-glog: pretty print revset expressions

graphlog: improve --only-branch handling The previous code was correct for command line as opts always contains the default empty lists for --branch and --only-branch options. But calling graphlog.revset() directly with only --only-branch set would leave it unprocessed.

dirstate: avoid normalizing letter case on icasefs for exact match (issue3340) on icasefs, "hg qnew" fails to import changing letter case of filename already occurred in working directory, for example: $ hg rename a tmp $ hg rename tmp A $ hg qnew casechange $ hg status R a $ "hg qnew" invokes 'dirstate.walk()' via 'localrepository.commit()' with 'exact match' matching object having exact filenames of targets in ones 'files()'. current implementation of 'dirstate.walk()' always normalizes letter case of filenames from 'match.files()' on icasefs, even though exact matching is required. then, files only different in letter case are treated as one file. this patch prevents 'dirstate.walk()' from normalizing, if exact matching is required, even on icasefs. filenames for 'exact matching' are given not from user command line, but from dirstate walk result, manifest of changecontext, patch files or fixed list for specific system files (e.g.: '.hgtags'). in such case, case normalization should not be done, so this patch works well.