fix generation of banner and others files.

doc/handbook/Makefile.am

@@ -97,6 +97,8 @@ pages.idx : ${CMDLINE_HELP_FILES} ${GENERATED_HELP_FILES}
          echo $$MP $$IF $$TI >> pages.idx ; \
         done
 
+.PHONY: license.texi release-info.texi authors.texi banner.texi
+
 license.texi : ${top_srcdir}/COPYING
 	(echo "@c %page license"; \
          echo "@c %title AltaRica Public License"; \
@@ -125,8 +127,7 @@ banner.texi :
            echo "@end verbatim" \
           ) > banner.texi
 
-.PHONY: release-info.texi
-release-info.texi: banner.txt
+release-info.texi: banner.txt 
 	@ (echo "@c %page version" ; \
            echo "@c %title Informations about ARC version." ; \
            echo "@verbatim"; \