Added a counter mode wrapper plugin operating on existing CBC crypters

src/libstrongswan/plugins/ctr/Makefile.am

@@ -0,0 +1,16 @@
+
+INCLUDES = -I$(top_srcdir)/src/libstrongswan
+
+AM_CFLAGS = -rdynamic
+
+if MONOLITHIC
+noinst_LTLIBRARIES = libstrongswan-ctr.la
+else
+plugin_LTLIBRARIES = libstrongswan-ctr.la
+endif
+
+libstrongswan_ctr_la_SOURCES = \
+	ctr_plugin.h ctr_plugin.c \
+	ctr_ipsec_crypter.h ctr_ipsec_crypter.c
+
+libstrongswan_ctr_la_LDFLAGS = -module -avoid-version