maliit-framework-qt5: don't replace directory names for maliit-defines.prf

The values from maliit-defines.prf are only used at runtime and not at compilation time so
we don't have to replace them with the proper staging paths.

Signed-off-by: Simon Busch <morphis@gravedo.de>
maliit-plugins-qt5: add dependency on libqt5svg-plugins

Signed-off-by: Simon Busch <morphis@gravedo.de>