updated poppler headers for win to 0.22.3 (= used dll version)

git-svn-id: http://svn.code.sf.net/p/texstudio/code@4180 92cce386-e96d-4106-809f-596c673a3fd8
fix that lupdate does not warn on hunspell abusing the preprocessor (which it still does)

git-svn-id: http://svn.code.sf.net/p/texstudio/code@4181 92cce386-e96d-4106-809f-596c673a3fd8
fix typo

git-svn-id: http://svn.code.sf.net/p/texstudio/code@4182 92cce386-e96d-4106-809f-596c673a3fd8
fix loading of bibliographies in hidden documents


git-svn-id: http://svn.code.sf.net/p/texstudio/code@4183 92cce386-e96d-4106-809f-596c673a3fd8
set RequirePackage as load command for packages

git-svn-id: http://svn.code.sf.net/p/texstudio/code@4184 92cce386-e96d-4106-809f-596c673a3fd8