stop automake trying to install all manpages 2 times.

(needs check by las, for older automake)

git-svn-id: svn+ssh://jackaudio.org/trunk/jack@3712 0c269be4-1314-0410-8aa9-9f06e86f4224

man/Makefile.am

@@ -11,4 +11,4 @@ man1_MANS = $(manpages)
 
 BUILT_SOURCES = $(manpages)
 
-dist_man_MANS = $(manpages)
+#dist_man_MANS = $(manpages)