* Before this patch some language specification schemas were
validated twice (or even more) because some parent specs had
references to specific schemas of child specs in their schemas.
And due to our recursive parsing algorithm the same schemas were
checked many times. It reduces performance and complicates
the entire lang specification framework because there's too many
relationships between different specs. The better approach is to
reduce a number of relationships. One way is to not check schemas
child specs when checking parent spec schema. This patch removes
such references replacing them just common schemas like
"non-empty" or "any" which don't lead to validating sub-schemas
when validating parent schemas.
* Minor style changes
Change-Id: I6b695c1870bf8b70112332d4052115543382cdc7
5c185c3481