Add some SOURCES and dependencies that had been left out of the Makefile.

src/Makefile.am

@@ -6,7 +6,12 @@ vmod_LTLIBRARIES = libvmod_gcrypt.la
 libvmod_gcrypt_la_LDFLAGS = -module -export-dynamic -avoid-version -shared
 
 libvmod_gcrypt_la_SOURCES = \
-	vmod_gcrypt.c
+	vmod_gcrypt.c \
+	vmod_gcrypt.h \
+	ciphers.h \
+	modes.h \
+	padding.h \
+	paddings.h
 
 nodist_libvmod_gcrypt_la_SOURCES = \
 	vcc_if.c \
@@ -14,7 +19,9 @@ nodist_libvmod_gcrypt_la_SOURCES = \
 
 libvmod_gcrypt_la_LIBADD = @LIBGCRYPT_LIBS@
 
-vmod_gcrypt.lo: vcc_if.c vcc_if.h
+vmod_gcrypt.lo: vcc_if.c vcc_if.h vmod_gcrypt.c
+
+vmod_gcrypt.c: vmod_gcrypt.h ciphers.h modes.h padding.h paddings.h
 
 vcc_if.c: vcc_if.h