[libxml2] (8 commits) Non-fast-forward update to branch fix-more-xmlBuf-and-xmlBuffer-issues

[David Kilzer <ddkilzer src gnome org>]

The branch 'fix-more-xmlBuf-and-xmlBuffer-issues' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  22dd9bd... Fix more overflow checks, off-by-ones and missing NUL termi

Commits added to the branch:

  054e46b... Restore behavior of htmlDocContentDumpFormatOutput() (*)
  c50196c... Fix use-after-free bugs when calling xmlTextReaderClose() b (*)
  351dbdf... Disable network in API tests (*)
  0aa8652... Use xmlNewDocText in xmlXIncludeCopyRange (*)
  4bc3ebf... Fix ownership of xmlNodePtr & xmlAttrPtr fields in xmlSetTr (*)
  461ef8a... Fix double colon typos in xmlBufferResize() (*)
  fe9f76e... Remove unused xmlBuf functions (*)
  776e1c3... Fix more overflow checks, off-by-ones and missing NUL termi

(*) This commit already existed in another branch; no separate mail sent