The static Qt modules in the base repository are already packaged as a
separate package (mingw-w64-qt5-base-static). This change applies the same
separation to Qt modules found in further repositories. That means it is no
longer required to build a static version of Qt if only shared libraries
are required.
Note that there's no static variant for mingw-w64-qt5-activeqt because this
module ends up being built as a static library anyways. There is also no
static version of mingw-w64-qt5-translations because it does not contain
any libraries.
* Only packages for additional modules are covered so far
* Only packages for mingw-w64 target are covered so far
* This leads to small adjustments/unifications within the
PKGBUILDs; not tested yet
* Adapt hacks to new config system
* Use distinct mkspec mingw-w64-g++ rather than
patching the existing win32-g++
* Testing QML and ANGLE is on TODO list
because it hasn't been tested since quite a time