Add dependeny to build both rst files from vcc.

Fix spotty dependency where none or just one of the
.rst files output by vmodtool.py was known by the Makefile.

lib/libvmod_debug/Makefile.am

@@ -24,7 +24,7 @@ nodist_libvmod_debug_la_SOURCES = \
 # BUILT_SOURCES is only a hack and dependency tracking does not help for the first build
 vmod_debug.lo vmod_debug_obj.lo: vcc_if.h
 
-vcc_if.c vcc_if.h: $(vmodtool) $(vmod_srcdir)/vmod.vcc
+vcc_if.c vcc_if.h vmod_debug.rst vmod_debug.man.rst: $(vmodtool) $(vmod_srcdir)/vmod.vcc
 	@PYTHON@ $(vmodtool) $(vmod_srcdir)/vmod.vcc
 
 EXTRA_DIST = vmod.vcc

lib/libvmod_directors/Makefile.am

@@ -28,7 +28,7 @@ nodist_libvmod_directors_la_SOURCES = \
 # BUILT_SOURCES is only a hack and dependency tracking does not help for the first build
 vdir.lo fall_back.lo hash.lo random.lo round_robin.lo: vcc_if.h
 
-vcc_if.c vcc_if.h vmod_directors.man.rst: $(vmodtool) $(vmod_srcdir)/vmod.vcc
+vcc_if.c vcc_if.h vmod_directors.rst vmod_directors.man.rst: $(vmodtool) $(vmod_srcdir)/vmod.vcc
 	@PYTHON@ $(vmodtool) $(vmod_srcdir)/vmod.vcc
 
 EXTRA_DIST = vmod.vcc

lib/libvmod_std/Makefile.am

@@ -26,7 +26,7 @@ nodist_libvmod_std_la_SOURCES = \
 # BUILT_SOURCES is only a hack and dependency tracking does not help for the first build
 vmod_std.lo vmod_std_fileread.lo vmod_std_conversions.lo: vcc_if.h
 
-vcc_if.c vcc_if.h vmod_std.man.rst: $(vmodtool) $(vmod_srcdir)/vmod.vcc
+vcc_if.c vcc_if.h vmod_std.rst vmod_std.man.rst: $(vmodtool) $(vmod_srcdir)/vmod.vcc
 	@PYTHON@ $(vmodtool) $(vmod_srcdir)/vmod.vcc
 
 EXTRA_DIST = vmod.vcc