2.6.4: * Xml(const char* buffer, ) constructor: Make this actually work. (Douglas C. MacKenzie) Bug #326512. * Documentation: Clarified lifetime rules. (Ole Laursen) * Build: - Fixed build when disabling properties and exceptions. (Armin Burgmeier, Openismus) - Check for both m4 and M4 in the GNU m4 output, to fix the build on some platforms. (Yselkowitz) Bug #42399.