Enable silent builds by default.

Cleaner build messages make it easier to spot compiler warnings and errors.
Use make V=1 to get the verbose output back.

# Conflicts:
#	configure.ac
#	doc/Makefile.am

doc/Makefile.am

@@ -17,19 +17,19 @@ transform = s/ginstall/install/; @program_transform_name@
 # see GNUmakefile and Makefile.maint.
 
 sample-config.tar.gz: sample-config
-	GZIP=$(GZIP_ENV) $(AMTAR) chozf $@ --exclude .svn $<
+	$(AM_V_GEN)GZIP=$(GZIP_ENV) $(AMTAR) chozf $@ --exclude .svn $<
 
 tincd.8.html: tincd.8
-	w3mman2html $? > $@
+	$(AM_V_GEN)w3mman2html $? > $@
 
 tinc.8.html: tinc.8
-	w3mman2html $? > $@
+	$(AM_V_GEN)w3mman2html $? > $@
 
 tinc-gui.8.html: tinc-gui.8
-	w3mman2html $? > $@
+	$(AM_V_GEN)w3mman2html $? > $@
 
 tinc.conf.5.html: tinc.conf.5
-	w3mman2html $? > $@
+	$(AM_V_GEN)w3mman2html $? > $@
 
 substitute = sed \
 	-e s,'@PACKAGE\@',"$(PACKAGE)",g \
@@ -38,18 +38,18 @@ substitute = sed \
 	-e s,'@localstatedir\@',"$(localstatedir)",g
 
 tincd.8: tincd.8.in
-	$(substitute) $? > $@
+	$(AM_V_GEN)$(substitute) $? > $@
 
 tinc.8: tinc.8.in
-	$(substitute) $? > $@
+	$(AM_V_GEN)$(substitute) $? > $@
 
 tinc-gui.8: tinc-gui.8.in
-	$(substitute) $? > $@
+	$(AM_V_GEN)$(substitute) $? > $@
 
 tinc.conf.5: tinc.conf.5.in
-	$(substitute) $? > $@
+	$(AM_V_GEN)$(substitute) $? > $@
 
 tincinclude.texi: tincinclude.texi.in
-	$(substitute) $? > $@
+	$(AM_V_GEN)$(substitute) $? > $@
 	
 tinc.texi: tincinclude.texi