Added missing Android.mk files to distribution.

src/stroke/Makefile.am

@@ -5,7 +5,7 @@ stroke.c stroke_msg.h stroke_keywords.c stroke_keywords.h
 
 stroke_LDADD = $(top_builddir)/src/libstrongswan/libstrongswan.la $(SOCKLIB)
 INCLUDES = -I$(top_srcdir)/src/libstrongswan
-EXTRA_DIST = stroke_keywords.txt
+EXTRA_DIST = stroke_keywords.txt Android.mk
 BUILT_SOURCES = stroke_keywords.c
 MAINTAINERCLEANFILES = stroke_keywords.c
 AM_CFLAGS = -DIPSEC_PIDDIR=\"${piddir}\"