FindGTK2: Detect pangoft2 and pangoxft libraries
VS10: Escape include paths in XML project files (#14331)

Fix generation of the AdditionalIncludeDirectories element content to
escape for XML syntax.  We already escape content of other elements,
this one was simply missing by accident.
Merge topic 'FindGTK2-pango-libs'

73ba4e5 FindGTK2: Detect pangoft2 and pangoxft libraries
Merge topic 'vs10-include-dir-ampersand'

e7bcdf8 VS10: Escape include paths in XML project files (#14331)