Nicer Makefile output about Library Path environment variable.

CollectAgent/Makefile

@@ -20,7 +20,7 @@ check-thrift-env:
 	@if [ "$U" = "Darwin" ]; then \
 	R=`echo $$DYLD_LIBRARY_PATH | grep $P`; \
 	if [ "$$R" = "" ]; then \
-	echo "******************************************"; echo "Please type: "; echo '  export DYLD_LIBRARY_PATH=$$DYLD_LIBRARY_PATH:$P'; echo "******************************************"; \
+	echo "******************************************"; echo "Please type the following line before running: "; echo '  export DYLD_LIBRARY_PATH=$$DYLD_LIBRARY_PATH:$P'; echo "******************************************"; \
 	fi; \
 	fi