chmod -x for doc, xlsx, png, hxx, cxx, xls, ppt, hpp

Change-Id: I52aed261e318cfd765e9adb3ed8edd226c8a59d8
Reviewed-on: https://gerrit.libreoffice.org/52569Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>