filemerge: normalize 'internal:foo' names to ':foo' In upcoming patches we're going to present these names in the UI -- it would be good not to present deprecated names.

filemerge: use symlinkcheck for :merge and :union This exposes a couple of bugs, both of which will be fixed in upcoming patches.

filemerge: add a precheck for symlinks This will be used by internal merge tools.

filemerge: call precheck if available In upcoming patches we'll define a precheck function for some merge tools.

filemerge: add a before-merge callback to internal merge tools We're going to separate the pre-merge and merge steps for merge tools. The merge step will be specific to the tool, but the pre-merge step will be common to all merge tools that need it. However, some merge tools run checks *before* the pre-merge step. This callback will allow that to continue to work.

filemerge: indent filemerge.filemerge This will make upcoming patches much easier to review.

test-bundle-type: replace unbundle with debugbundle We now have a convenient command to look at bundle contents, let's use it.

bundle: extract the parsing of the bundle type in a function We are going to introduce significant extensions of the bundle parsing code to support creation of bundle2 through the bundle command. As an early step, we extract the logic in its own function.

changegroup: add version argument to getchangegroup For some obscure reasons (probably upsetting a Greek goddess), getchangegroup did not had a 'version' argument to control the changegroup version. We fixes this to allow cg02 to be used with 'hg bundle' in the future.

changegroup: add version argument to getlocalchangegroup For some obscure reasons (probably upsetting a Greek goddess), getlocalchangegroup did not have a 'version' argument to control the changegroup version. We fix this to allow cg02 to be used with 'hg bundle' in the future.