2 libs linked statically for c++
Merge branch 'engineering' of https://github.com/ncbi/sra-tools into engineering

Conflicts:
	build/ld.linux.gcc.sh
Merge branch 'engineering' of https://github.com/ncbi/sra-tools into engineering
Merge branch 'engineering' of https://github.com/ncbi/sra-tools into engineering
Merge branch 'engineering' of https://github.com/ncbi/sra-tools into engineering
there was one KNamelistRelease missing
fixed to release placement-iterator if the set was not able to take ownership and some comments