[MERGE][1.16] Added directory structure and started translation of docs in Russian.

[Stephen J. Turnbull]

Alexander Belchenko writes:

 > I've attached also excerpt from preview diff with changes to Makefiles 
 > and some type fixed in originals. I'm not sure anybody without Russian 
 > language knowledge will be able to review translations itself. So it's 
 > not clear for me how the review process for such patches should work.

Both Debian and Ubuntu have translation teams.  Ask for reviewers on
their mailing lists, maybe?  There are probably mailing lists
specifically for Russian translators, too.