Added a simple led plugin to control Linux LEDs based on IKE activity

src/libcharon/plugins/led/Makefile.am

@@ -0,0 +1,16 @@
+
+INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libhydra \
+	-I$(top_srcdir)/src/libcharon
+
+AM_CFLAGS = -rdynamic
+
+if MONOLITHIC
+noinst_LTLIBRARIES = libstrongswan-led.la
+else
+plugin_LTLIBRARIES = libstrongswan-led.la
+endif
+
+libstrongswan_led_la_SOURCES = led_plugin.h led_plugin.c \
+	led_listener.h led_listener.c
+
+libstrongswan_led_la_LDFLAGS = -module -avoid-version