Define $(vmoddir) in a single location

Trimming more of the automake_boilerplate.am fat that prevents using
$(vmodtool) --boilerplate out of tree.

bin/varnishd/Makefile.am

@@ -163,7 +163,7 @@ varnishd_CFLAGS = \
 	@SAN_CFLAGS@ \
 	-DNOT_IN_A_VMOD \
 	-DVARNISH_STATE_DIR='"${VARNISH_STATE_DIR}"' \
-	-DVARNISH_VMOD_DIR='"${pkglibdir}/vmods"' \
+	-DVARNISH_VMOD_DIR='"${vmoddir}"' \
 	-DVARNISH_VCL_DIR='"${pkgsysconfdir}:${vcldir}"'
 
 varnishd_LDFLAGS = -export-dynamic

configure.ac

@@ -665,6 +665,9 @@ AC_SUBST(VARNISH_STATE_DIR)
 pkgsysconfdir='${sysconfdir}/varnish'
 AC_SUBST(pkgsysconfdir)
 
+# VMODs directory
+AC_SUBST(vmoddir, [$\(pkglibdir\)/vmods])
+
 # Check for linker script support
 gl_LD_VERSION_SCRIPT
 

lib/libvcc/vmodtool.py

@@ -56,7 +56,6 @@ AM_CPPFLAGS = \\
 \t-I$(top_srcdir)/bin/varnishd \\
 \t-I$(top_builddir)/include
 
-vmoddir = $(pkglibdir)/vmods
 vmodtool = $(top_srcdir)/lib/libvcc/vmodtool.py
 vmodtoolargs ?= --strict --boilerplate -o PFX
 

lib/libvmod_blob/automake_boilerplate.am

@@ -7,7 +7,6 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir)/bin/varnishd \
 	-I$(top_builddir)/include
 
-vmoddir = $(pkglibdir)/vmods
 vmodtool = $(top_srcdir)/lib/libvcc/vmodtool.py
 vmodtoolargs ?= --strict --boilerplate -o vcc_if
 

lib/libvmod_cookie/automake_boilerplate.am

@@ -7,7 +7,6 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir)/bin/varnishd \
 	-I$(top_builddir)/include
 
-vmoddir = $(pkglibdir)/vmods
 vmodtool = $(top_srcdir)/lib/libvcc/vmodtool.py
 vmodtoolargs ?= --strict --boilerplate -o vcc_if
 

lib/libvmod_debug/automake_boilerplate.am

@@ -7,7 +7,6 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir)/bin/varnishd \
 	-I$(top_builddir)/include
 
-vmoddir = $(pkglibdir)/vmods
 vmodtool = $(top_srcdir)/lib/libvcc/vmodtool.py
 vmodtoolargs ?= --strict --boilerplate -o vcc_if
 

lib/libvmod_directors/automake_boilerplate.am

@@ -7,7 +7,6 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir)/bin/varnishd \
 	-I$(top_builddir)/include
 
-vmoddir = $(pkglibdir)/vmods
 vmodtool = $(top_srcdir)/lib/libvcc/vmodtool.py
 vmodtoolargs ?= --strict --boilerplate -o vcc_if
 

lib/libvmod_proxy/automake_boilerplate.am

@@ -7,7 +7,6 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir)/bin/varnishd \
 	-I$(top_builddir)/include
 
-vmoddir = $(pkglibdir)/vmods
 vmodtool = $(top_srcdir)/lib/libvcc/vmodtool.py
 vmodtoolargs ?= --strict --boilerplate -o vcc_if
 

lib/libvmod_purge/automake_boilerplate.am

@@ -7,7 +7,6 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir)/bin/varnishd \
 	-I$(top_builddir)/include
 
-vmoddir = $(pkglibdir)/vmods
 vmodtool = $(top_srcdir)/lib/libvcc/vmodtool.py
 vmodtoolargs ?= --strict --boilerplate -o vcc_if
 

lib/libvmod_std/automake_boilerplate.am

@@ -7,7 +7,6 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir)/bin/varnishd \
 	-I$(top_builddir)/include
 
-vmoddir = $(pkglibdir)/vmods
 vmodtool = $(top_srcdir)/lib/libvcc/vmodtool.py
 vmodtoolargs ?= --strict --boilerplate -o vcc_if
 

lib/libvmod_unix/automake_boilerplate.am

@@ -7,7 +7,6 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir)/bin/varnishd \
 	-I$(top_builddir)/include
 
-vmoddir = $(pkglibdir)/vmods
 vmodtool = $(top_srcdir)/lib/libvcc/vmodtool.py
 vmodtoolargs ?= --strict --boilerplate -o vcc_if
 

lib/libvmod_vtc/automake_boilerplate.am

@@ -7,7 +7,6 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir)/bin/varnishd \
 	-I$(top_builddir)/include
 
-vmoddir = $(pkglibdir)/vmods
 vmodtool = $(top_srcdir)/lib/libvcc/vmodtool.py
 vmodtoolargs ?= --strict --boilerplate -o vcc_if