vici: Add a plugin stub for the "Versatile IKE Control Interface" plugin

src/libcharon/plugins/vici/Makefile.am

@@ -0,0 +1,19 @@
+AM_CPPFLAGS = \
+	-I$(top_srcdir)/src/libstrongswan \
+	-I$(top_srcdir)/src/libhydra \
+	-I$(top_srcdir)/src/libcharon \
+	-DIPSEC_PIDDIR=\"${piddir}\"
+
+AM_CFLAGS = \
+	-rdynamic
+
+if MONOLITHIC
+noinst_LTLIBRARIES = libstrongswan-vici.la
+else
+plugin_LTLIBRARIES = libstrongswan-vici.la
+endif
+
+libstrongswan_vici_la_SOURCES = \
+	vici_plugin.h vici_plugin.c
+
+libstrongswan_vici_la_LDFLAGS = -module -avoid-version