Pull out into a separate function: the code in SELECT() that builds a

Pull out into a separate function: the code in SELECT() that builds a
comma-separated list of ORDER BY expressions from a JSON_ARRAY.

Invoke that function, not only from SELECT(), but also from the
buildSELECT() function.

As a result, the select methods will be able to use the same array
syntax as json_query for ORDER BY clauses, as an alternative to the
existing hash syntax.

M    Open-ILS/src/c-apps/oils_sql.c

git-svn-id: svn://svn.open-ils.org/ILS/trunk@18258 dcc99617-32d9-48b4-a31d-7c20da2025e4