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/makedepend.aCC

@@ -0,0 +1,25 @@
+#! /bin/sh
+#
+# makedepend.aCC
+#
+# Create dependency file, HP ANSI C++ version
+# Usage: makedepend.gcc source target dir1 dir2 dir3 dir4 flags...
+#
+
+source=$1
+shift
+target=$1
+shift
+dir1=$1
+shift
+dir2=$1
+shift
+dir3=$1
+shift
+dir4=$1
+shift
+
+tmpfile=`basename $target`
+aCC -E +maked $@ $source >/dev/null 
+sed "s#\(.*\.o$\)#$dir1/\1 $dir2/\1 $dir3/\1 $dir4/\1#" <$tmpfile >$target
+rm $tmpfile