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/ProGen/templates/vs150/Win32/executable/project.template

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="Windows-1252"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="9.00"
+	Name="${project.name}"
+	ProjectGUID="{${project.guid}}"
+	RootNamespace="${project.name}"
+	Keyword="Win32Proj"
+	TargetFrameworkVersion="0"
+	>
+	<Platforms>
+		<Platform
+			Name="Win32"
+		/>
+		<Platform
+			Name="x64"
+		/>
+	</Platforms>
+	<ToolFiles>
+	</ToolFiles>
+	<Configurations>
+	</Configurations>
+	<References>
+	</References>
+	<Files>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>