charon-svc: Implement a Windows IKE service using libcharon

The resulting binary can be either run as Windows service or directly as
console application.

src/charon-svc/Makefile.am

@@ -0,0 +1,16 @@
+bin_PROGRAMS = charon-svc
+
+charon_svc_SOURCES = charon-svc.c
+
+charon-svc.o :	$(top_builddir)/config.status
+
+AM_CPPFLAGS = \
+	-I$(top_srcdir)/src/libstrongswan \
+	-I$(top_srcdir)/src/libhydra \
+	-I$(top_srcdir)/src/libcharon \
+	-DPLUGINS=\""${charon_plugins}\""
+
+charon_svc_LDADD = \
+	$(top_builddir)/src/libstrongswan/libstrongswan.la \
+	$(top_builddir)/src/libhydra/libhydra.la \
+	$(top_builddir)/src/libcharon/libcharon.la