Fixed issue #39.
New api, argnums array specifies count of parameters to be put into
corresponding query. json_rpc table is changed - argnum::integer ->
argnums::integer[].
Unittests compilation fix
Merge remote-tracking branch 'origin/master' into issue#39

Conflicts:
	source/server/database.d
Merge pull request #41 from DSoftOut/issue#39

Fixed issue #39.