[trac744] Makefile.am fix

src/lib/datasrc/Makefile.am

@@ -20,8 +20,8 @@ libdatasrc_la_SOURCES += zonetable.h zonetable.cc
 libdatasrc_la_SOURCES += memory_datasrc.h memory_datasrc.cc
 libdatasrc_la_SOURCES += zone.h
 libdatasrc_la_SOURCES += result.h
-libdatasrc_la_SOURCES += messagedef.h messagedef.cc
 libdatasrc_la_SOURCES += logger.h logger.cc
+nodist_libdatasrc_la_SOURCES = messagedef.h messagedef.cc
 
 libdatasrc_la_LIBADD = $(top_builddir)/src/lib/exceptions/libexceptions.la
 libdatasrc_la_LIBADD += $(top_builddir)/src/lib/dns/libdns++.la