Commit 3d3d65f5 separated the PDB files for compiling and linking. Only
the PDB file the linker produces would be installed. However, this does
not work for static libraries as the LIB tool does not create a PDB file
from the compiler's PDB file. This patch turns the separation between
PDB files off for static libraries.
Task-number: QTBUG-56594
Change-Id: I08dcb7889c67b2f6370efa1ee19be8558355bbc9
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>