[libxml2] Created tag v2.9.4-rc2

[Daniel Veillard <veillard src gnome org>]

The signed tag 'v2.9.4-rc2' was created.

Tagger: Daniel Veillard <veillard redhat com>
Date: Mon May 9 10:38:34 2016 +0800

    Candidate release 2 of libxml2 2.9.4

Changes since the last tag 'v2.9.4-rc1':

Alex Henrie (1):
      Fix XSD validation of URIs with ampersands

Daniel Veillard (3):
      Add a make rule to rebuild for ASAN
      Fix an error with regexp on nullable counted char transition
      Fix apibuild for a recently added construct

Hugh Davenport (1):
      Fix null pointer deref in docs with no root element

Nick Wellnhofer (2):
      Fix namespace axis traversal
      Fix memory leak with XPath namespace nodes

Patrick Monnerat (2):
      dict.h: Move xmlDictPtr definition before includes to allow direct inclusion.
      Portability to non C99 compliant compilers

Stewart Brodie (2):
      Use pkg-config to locate ICU when possible
      Use pkg-config to locate zlib when possible