remoteui: copy http_proxy settings
http_proxy settings of current repo's .hg/hgrc should be available
on remoteui, so that the httprepo can use them when pulling via http.
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 1 changesets, 1 total revisions