[m-rev.] trivial diff: Prevent recursive loop bug in test system

[Michael Wybrow]

Simon, could you just give this the once over.

=====================================================================

Estimated hours taken: 5
Branches: main

Prevent the test system from recursively starting mmake processes if the
PROGS variable for any test directory contains just whitespace.

tests/Mmake.common:
	Make use of the $(strip string) command to remove whitespace from
	the list of tests before we check if this list is empty.

Index: Mmake.common
===================================================================
RCS file: /home/mercury1/repository/tests/Mmake.common,v
retrieving revision 1.36
diff -u -r1.36 Mmake.common
--- Mmake.common	30 Nov 2002 14:33:15 -0000	1.36
+++ Mmake.common	10 Jan 2003 02:41:52 -0000
@@ -230,7 +230,7 @@
 		$(filter $(THIS_DIR)/%,$(TESTS_TO_RUN))) \
 		| tr ' ' '\n' | grep -v /)
 else
-THIS_DIR_TESTS_TO_RUN := $(TESTS)
+THIS_DIR_TESTS_TO_RUN := $(strip $(TESTS))
 endif
 
 ifeq ($(THIS_DIR_TESTS_TO_RUN),)
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