Bugfixes to imports in stdlib and to handle imports in separate compilation
Merge commit 'aff96f9986fc256e0970c3de1b864549affe0ea0' into separate-compilation-bootstrap

Conflicts:
	strategoxt/stratego-libraries/java-backend/java/runtime/org/strategoxt/lang/compat/override/strc-compat.str
	strategoxt/stratego-libraries/java-backend/trans/separate-compilation.str
Corrected order of multiple strategy definitions in a single module in the resultion choices, dont know, why it worked further, but from the calls in model it seems very reasonable for me to change the order and now the result is correct - on a strange way, the old compiler does it right, too ....
Merge commit 'a48d9047276268a1f3cdccda00d45ea4687fb0ca' into separate-compilation-bootstrap