A failure in testlib is apt to imply misleading failures elsewhere, so
catch those first. Likewise, broken tools or corelib break
everything. Put the rest of the list in alphabetic order.
Restructure auto.pro to use conditional SUBDIRS += (in the right
order) instead of setting SUBDIRS to a full list and then doing
conditional SUBDIRS -= for most entries. This more closely matches the
way the generated cmake config does things, although it still doesn't
regenerate cleanly.
Change-Id: Idc15326c3534eb4fdce55394269f2dfbc17fcd99
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>