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/PDF/src/hpdf_exdata.c

@@ -0,0 +1,69 @@
+/*
+ * << Haru Free PDF Library >> -- hpdf_annotation.c
+ *
+ * URL: http://libharu.org
+ *
+ * Copyright (c) 1999-2006 Takeshi Kanno <takeshi_kanno@est.hi-ho.ne.jp>
+ * Copyright (c) 2007-2009 Antony Dovgal <tony@daylessday.org>
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation.
+ * It is provided "as is" without express or implied warranty.
+ *
+ */
+
+#include "hpdf_conf.h"
+#include "hpdf_utils.h"
+#include "hpdf_info.h"
+#include "hpdf_exdata.h"
+#include "hpdf.h"
+
+/*----------------------------------------------------------------------------*/
+/*------ HPDF_ExData -----------------------------------------------------*/
+
+
+
+HPDF_ExData
+HPDF_3DAnnotExData_New(HPDF_MMgr mmgr,
+					   HPDF_Xref xref)
+{
+	HPDF_ExData exdata;
+	HPDF_STATUS ret = HPDF_OK;
+
+
+	HPDF_PTRACE((" HPDF_ExData_New\n"));
+
+	exdata = HPDF_Dict_New (mmgr);
+	if (!exdata)
+		return NULL;
+
+	if (HPDF_Xref_Add (xref, exdata) != HPDF_OK)
+		return NULL;
+
+	ret += HPDF_Dict_AddName (exdata, "Type", "ExData");
+	ret += HPDF_Dict_AddName (exdata, "Subtype", "3DM");
+
+	if (ret != HPDF_OK)
+		return NULL;
+
+	return exdata;
+}
+
+
+
+HPDF_EXPORT(HPDF_STATUS)
+HPDF_3DAnnotExData_Set3DMeasurement(HPDF_ExData exdata, 
+						   HPDF_3DMeasure measure)
+{
+	HPDF_STATUS ret = HPDF_OK;
+
+	ret = HPDF_Dict_Add (exdata, "M3DREF", measure);
+	if (ret != HPDF_OK)
+		return ret;
+
+	return ret;
+}
+