Merge branch 'upstream-expat' into update-expat

Utilities/cmexpat/CMakeLists.txt

Utilities/cmexpat/COPYING

Utilities/cmexpat/ConfigureChecks.cmake

Utilities/cmexpat/README

Utilities/cmexpat/expat_config.h.cmake

Utilities/cmexpat/lib/ascii.h

Utilities/cmexpat/lib/asciitab.h

Utilities/cmexpat/lib/expat.h

Utilities/cmexpat/lib/expat_external.h

Utilities/cmexpat/lib/iasciitab.h

Utilities/cmexpat/lib/internal.h

Utilities/cmexpat/lib/latin1tab.h

Utilities/cmexpat/lib/nametab.h

Utilities/cmexpat/lib/utf8tab.h

Utilities/cmexpat/lib/winconfig.h

Utilities/cmexpat/lib/xmlparse.c

Utilities/cmexpat/lib/xmlrole.c

Utilities/cmexpat/lib/xmlrole.h

Utilities/cmexpat/lib/xmltok.c

Utilities/cmexpat/lib/xmltok.h