bundle2.bundlepart: make mandatory part flag explicit in API This makes all bundle2 parts mandatory unless they are expressly made advisory via the keyword parameter or the bundlepart.mandatory property.

memctx: calculate manifest correctly with newly-removed files (issue4470) Before this patch, "memctx._manifest" tries to get (and use normally) filectx also for newly-removed files, even though "memctx.filectx()" returns None for such files. To calculate manifest correctly even with newly-removed files, this patch does: - replace "man.iteritems()" for the loop by "self._status.modified" to avoid accessing itself to newly removed files this also reduces loop cost for large manifest. - remove files in "self._status.removed" from the manifest In this patch, amending is confirmed twice to examine both (1) newly removed files and (2) ones already removed in amended revision.

memctx: calculate manifest including newly added files correctly Before this patch, "memctx._manifest" calculates the manifest according to the 1st parent. This causes the disappearance of newly added files from the manifest. For example, if newly added files aren't listed up in manifest of memctx, they aren't listed up in "added" field of "status" returned by "ctx.status()", and "{diff()}" (= "patch.diff") in "committemplate" shows nothing for them. To calculate manifest including newly added files correctly, this patch puts newly added files (= ones in "self._status.added") into the manifest. Some details of changes for "test-commit-amend.t" in this patch: - "touch foo" is replaced by "echo foo > foo", because newly added empty file can't be shown in "diff()" output without "diff.git" configuration - amending is confirmed twice to examine both (1) newly added files and (2) ones already added in amended revision