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/build/script/projname

@@ -0,0 +1,17 @@
+#! /bin/sh
+#
+# projname
+#
+# Usage: projname PROJECT_BASE
+#
+# Extract the project name from the current path
+# NOTE: the cd $PROJECT_BASE is necessary to resolve symbolic links,
+#       ditto is the kinda strange sh -c pwd
+#
+
+PROJECT_BASE=$1
+cdir=`sh -c pwd`
+cd $PROJECT_BASE
+projbase=`sh -c pwd`
+cd "$cdir"
+sh -c pwd | sed "s:^$projbase::" | sed "s:^/::"