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/Data/SQLite/Makefile

@@ -0,0 +1,30 @@
+#
+# Makefile
+#
+# Makefile for Poco SQLite
+#
+
+include $(POCO_BASE)/build/rules/global
+
+COMMONFLAGS += -I$(POCO_BASE)/Data/SQLite/src
+
+SYSFLAGS += -DSQLITE_THREADSAFE=1 -DSQLITE_DISABLE_LFS \
+        -DSQLITE_OMIT_UTF16 -DSQLITE_OMIT_PROGRESS_CALLBACK -DSQLITE_OMIT_COMPLETE \
+        -DSQLITE_OMIT_TCL_VARIABLE -DSQLITE_OMIT_DEPRECATED
+
+objects = Binder Extractor Notifier SessionImpl Connector \
+        SQLiteException SQLiteStatementImpl Utility
+
+sqlite_objects = sqlite3
+
+ifdef POCO_UNBUNDLED
+        SYSLIBS += -lsqlite3
+else
+        objects += $(sqlite_objects)
+endif
+
+target         = PocoDataSQLite
+target_version = $(LIBVERSION)
+target_libs    = PocoData PocoFoundation
+
+include $(POCO_BASE)/build/rules/lib