[master] Fixed Makefile.am

Makefile.am

@@ -110,7 +110,7 @@ install-exec-hook:
 
 ### include tool to generate documentation from log message specifications
 ### in the distributed tarball:
-EXTRA_DIST += tools/path_replacer.sh
+EXTRA_DIST  = tools/path_replacer.sh
 EXTRA_DIST += tools/mk_cfgrpt.sh
 
 #### include external sources in the distributed tarball: