Log Message:
Updated textproc/qore-json-module to version 1.7 .

Removed patch-src_ql__json.qpp fixed upstream.

Changes from release notes:
* deprecated support for the non-published JSON-RPC 1.1 protocol
* added support for JSON-RPC 2.0
* added the JsonRpcConnection user module
* improved argument error messages with RPC calls in the
  JsonRpcHandler module
* fixed date serialization to use ISO-8601 format
  (instead of near-ISO-8601 format)
* parse_json() now ignores UTF-8 and Unicode BOMs at the
  start of passed JSON string
* fixed a bug in request logging in the JsonRpcHandler module
* fixed a bug serializing hash keys with embedded quotes