Add the USE_XCB_<component>_STATIC switches that force using the
static versions of xcb components if necessary.
The xcb components needs to be built with -fPIC option, to make the
static linking possible.
When Qt is built staticaly USE_XCB_<component>_STATIC needs to be
passed to the application command line, since in static case xcb
libraries are resolved and linked when configuring application, but
not when building Qt.
Pick-to: 6.7 6.6 6.5
Task-number: QTBUG-120769
Change-Id: I274e9cf4a6a111dc87ad84bb7f49cad76a3d364a
Reviewed-by: Liang Qi <liang.qi@qt.io>
6ce6ff1c52