In various places we relied on compiler extensions such as
variable-length arrays on the stack or using non-standard escape
sequences. In order to make our code as portable as possible, these
parts of the code have been refactored to only use standard C++.
Furthermore, the new warning settings triggered a bunch of new warnings
all over the place that have been addressed by this commit.
Apparently the first commit (59ae429972)
did not include all files.
Furthermore the used script tended to produce funny results in certain
cases. This has been fixed and as a result thereof a few more changes
were made in this second run.
According to Qt's documentation the PCH header doesn't need to be included.
From https://doc.qt.io/qt-5/qmake-precompiledheaders.html:
"To make your project use precompiled headers, you only need to define the PRECOMPILED_HEADER variable in your project file."
"qmake will handle the rest, to ensure the creation and use of the precompiled header file. You do not need to include the precompiled header file in HEADERS, as qmake will do this if the configuration supports precompiled headers."
