Major plugin refactor and cleanup.

Switched to POCO library for unified platform/library interface.
Deprecated the external module API. It was creating more problems than solving.
Removed most built-in libraries in favor of system libraries for easier maintenance.
Cleaned and secured code with help from static analyzers.

vendor/POCO/MongoDB/Makefile

@@ -0,0 +1,21 @@
+#
+# Makefile
+#
+# Makefile for Poco MongoDB
+#
+
+include $(POCO_BASE)/build/rules/global
+
+INCLUDE += -I $(POCO_BASE)/MongoDB/include/Poco/MongoDB
+
+objects = Array Binary Connection Cursor DeleteRequest  Database \
+	Document Element GetMoreRequest InsertRequest JavaScriptCode \
+	KillCursorsRequest Message MessageHeader ObjectId QueryRequest \
+	RegularExpression ReplicaSet RequestMessage ResponseMessage \
+	UpdateRequest
+
+target         = PocoMongoDB
+target_version = $(LIBVERSION)
+target_libs    = PocoFoundation PocoNet
+
+include $(POCO_BASE)/build/rules/lib