Attempting to introduce per-deployment target env vars
defined in the AADL files that describe the targets.

...to work with TASTE v2

- in case of V2: do the md5 on the v2 version, not on v1.3 converted IV
- concurrency view generator: support v2

asn2aadlPlus must call the asn1 compiler 5 times and therefore prints
the same errors/warnings multiple times