Handle src/vmod_vcs_version.txt

Since VC 7.7, vmodtool.py generates a file that
must be taken into account in Makefile.am
https://varnish-cache.org/docs/trunk/whats-new/upgrading-7.7.html

Author: Thibaut Artis

.gitignore

@@ -49,3 +49,5 @@ vmod-querystring-*/
 
 vmod-*.tar.[gx]z
 *.spec
+
+src/vmod_vcs_version.txt

src/Makefile.am

@@ -34,6 +34,10 @@ nodist_libvmod_dynamic_la_SOURCES = \
 	vcc_dynamic_if.c \
 	vcc_dynamic_if.h
 
+vmod_vcs_version.txt: vcc_dynamic_if.c
+
+DISTCLEANFILES = vmod_vcs_version.txt
+
 $(srcdir)/dyn_getdns.c: vcc_dynamic_if.h
 $(srcdir)/dyn_resolver_gai.c: vcc_dynamic_if.h
 $(srcdir)/dyn_resolver_getdns.c: vcc_dynamic_if.h
@@ -60,6 +64,7 @@ TESTS = \
 
 dist_doc_DATA = \
 	vmod_dynamic.vcc \
+	vmod_vcs_version.txt \
 	$(TESTS)
 
 dist_man_MANS = \