Add maintenance makefile rule and XSLT transform to generate a unified header of all library functions for analysis purposes.

Maintenance/lufa_functionlist_transform.xslt

@@ -0,0 +1,19 @@
+<!--
+             LUFA Library
+     Copyright (C) Dean Camera, 2013.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+-->
+
+<!-- Extracts out all function signatures from a combined Doxygen XML output. -->
+
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
+	<xsl:output method="xml" omit-xml-declaration="yes"/>
+
+	<xsl:template match="doxygen">
+		<xsl:for-each select="//memberdef[@kind = 'function']">
+			<xsl:value-of select="definition"/><xsl:value-of select="argsstring"/><xsl:text>;&#10;</xsl:text>
+		</xsl:for-each>
+	</xsl:template>
+</xsl:stylesheet>

Maintenance/makefile

@@ -14,6 +14,13 @@ LUFA_ROOT := ../
 
 all:
 
+# Generate a header containing all library functions
+function-list:
+	$(MAKE) -C $(patsubst %/,%,$(LUFA_ROOT))/LUFA doxygen DOXYGEN_OVERRIDE_PARAMS="GENERATE_XML=yes"
+	@xsltproc $(patsubst %/,%,$(LUFA_ROOT))/LUFA/Documentation/xml/combine.xslt $(patsubst %/,%,$(LUFA_ROOT))/LUFA/Documentation/xml/index.xml > temp.xml
+	@xsltproc lufa_functionlist_transform.xslt temp.xml > function_list.h
+	@rm temp.xml
+
 # Update all Doxygen configuration files to the latest Doxygen version - force Markdown support to be disabled
 upgrade-doxygen:
 	@echo Upgrading Doxygen.conf files...