Added generic XAuth backend, using secrets provided by credential sets.

src/libcharon/plugins/xauth_generic/Makefile.am

@@ -0,0 +1,17 @@
+
+INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \
+	-I$(top_srcdir)/src/libcharon
+
+AM_CFLAGS = -rdynamic
+
+if MONOLITHIC
+noinst_LTLIBRARIES = libstrongswan-xauth-generic.la
+else
+plugin_LTLIBRARIES = libstrongswan-xauth-generic.la
+endif
+
+libstrongswan_xauth_generic_la_SOURCES = \
+	xauth_generic_plugin.h xauth_generic_plugin.c \
+	xauth_generic.h xauth_generic.c
+
+libstrongswan_xauth_generic_la_LDFLAGS = -module -avoid-version