merge with i18n

i18n-pt_BR: synchronized with a4b67bf1f0a5

i18n-ja: synchronized with a4b67bf1f0a5

rebase: fix bug that caused transitive copy records to disappear (issue4192) The defect was that copies were always duplicated against the target revision, rather than the first parent of the revision being rebased. This produced nominally correct results if changes were rebased one at a time (or with --collapse), but was wrong if we rebased a sequence of changesets which contained a sequence of copies.

cmdutil: add copy-filtering support to duplicatecopies In order to fix issue 4192 we need to be able to skip some copies while doing duplicatecopies.

dispatch: handle empty IOError args We occasionally throw bare IOError objects (especially in convert), don't choke on them.

repoview: do not crash when localtags refers to non existing revisions This fixes a crash that may happen when using mercurial 3.0.x. The _gethiddenblockers function assumed that the output of tags.readlocaltags() was a dict mapping tags to of valid nodes. However this was not necessarily the case. When a repository had obsolete revisions and had local tag pointing to a non existing revision was found, many mercurial commands would crash. This revision fixes the problem by removing any tags from the output of tags.readlocaltags() which point to invalid nodes. We may want to add a warning when this happens (although it might be annoying to get that warning for every command, possibly even more than once per command). A test for this problem has been added to test-obsolete.t. Without this fix the test would output: $ hg tags abort: 00changelog.i@3816541e5485: no node! [255] Instead of: $ hg tags tiptag 2:3816541e5485 tip 2:3816541e5485 visible 0:193e9254ce7e

templater: add symbol to error This patch makes it easier to debug writing templater functions by telling the user exactly what was sent to the templater.

templater: introduce startswith function This function returns a string only if it starts with a given string. It is particularly useful when combined with splitlines and/or used with conditionals that fail when empty strings are passed in to take action based on the contents of a line.

templatefilter: add splitlines function This is useful for applying changes to each line, and it's especially powerful when used in conjunction with conditionals to modify lines based on content.