pkgng beta11 problem with sqlitedb locks

[Oleg Ginzburg]

Hi, i found some issues on the parallel work with pkgng base.

For example while pkg2ng works, on the second console try to install 
something:

% pkg install deco

current process can show multiple lines like:

Checking integrity...pkg: WARNING: locally installed (null)-(null) conflicts 
on (null) with:
..

and pkg2ng session can show something like that: http://pastebin.com/3P3vYFAM