use only major.minor version part for debian, closes #1917
move binaries to new debian version schema, update #1917
Just fallback to a normal query as discussed with @mpapis.
Add comments to exmplain.
revert b303b8377c78f33cc5378ec6574b8394ce9c7b55 58b0a32b7e17b2392fdcfc8f9a54fa5a8c33e3ab
do not allow cd to fail, fix #1918