WinRT: Disable some examples

assistant uses IPC, which is not supported.
Using the designer library is completely disabled for WinRT.

Change-Id: I7f569fe975c16dd3f3ce8744d1ed5c06a84d8da6
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Disable tests for linguist when cross compiling

Change-Id: I724bfa5d6ad0d8757e6ff10d9444d5f26d3d5270
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>