The official_releases directory returns 404 for Qt 5.15.16.
Switching to the archive path ensures a reliable primary download.
Fixes#101
Relates to #72
Signed-off-by: Tito Brasolin <tito.brasolin@gmail.com>
strip '-' from PKG_NAME to determine official module name, but keep them
inside PKG_NAMEs for readibility (same as we still have the major
version number inside PKG_NAMEs)
given qt5/common.mk is now included earlier, some variables such as
CONFIGURE_PREFIX are not yet defined. Since it's always /usr anyway,
set it statically.
That way projects not using qmake (but cmake) can still import all qt5
specific variables and helper functions, without its routines being
overriden by the qmake specific ones.
