Print the name of the .exp file related to a change reported with the -l option.

This makes it easier to reproduce regressions, avoiding the need to check
in the .sum which .exp was involved.

Change-Id: Iebd6f5ecf218037e372600f61168db8240ac7401
diff --git a/testsuite/sum-1.txt b/testsuite/sum-1.txt
index b626a8c..43fdb62 100644
--- a/testsuite/sum-1.txt
+++ b/testsuite/sum-1.txt
@@ -1,3 +1,5 @@
+Running target mytarget
+Running tests-1.exp ...
 PASS: test1-pass-pass
 PASS: test2-pass-xpass
 PASS: test3-pass-fail
@@ -7,6 +9,7 @@
 PASS: test7-pass-untested
 PASS: test8-pass-unresolved
 
+Running tests-2.exp ...
 XPASS: test1-xpass-pass
 XPASS: test2-xpass-xpass
 XPASS: test3-xpass-fail
@@ -16,6 +19,7 @@
 XPASS: test7-xpass-untested
 XPASS: test8-xpass-unresolved
 
+Running tests-3.exp ...
 FAIL: test1-fail-pass
 FAIL: test2-fail-xpass
 FAIL: test3-fail-fail
@@ -25,6 +29,7 @@
 FAIL: test7-fail-untested
 FAIL: test8-fail-unresolved
 
+Running tests-4.exp ...
 XFAIL: test1-xfail-pass
 XFAIL: test2-xfail-xpass
 XFAIL: test3-xfail-fail
@@ -34,6 +39,7 @@
 XFAIL: test7-xfail-untested
 XFAIL: test8-xfail-unresolved
 
+Running tests-5.exp ...
 UNSUPPORTED: test1-unsupported-pass
 UNSUPPORTED: test2-unsupported-xpass
 UNSUPPORTED: test3-unsupported-fail
@@ -42,6 +48,7 @@
 UNSUPPORTED: test6-unsupported-untested
 UNSUPPORTED: test7-unsupported-unresolved
 
+Running tests-6.exp ...
 UNTESTED: test1-untested-pass
 UNTESTED: test2-untested-xpass
 UNTESTED: test3-untested-fail
@@ -50,6 +57,7 @@
 UNTESTED: test6-untested-unsupported
 UNTESTED: test7-untested-unresolved
 
+Running tests-7.exp ...
 UNRESOLVED: test1-unresolved-pass
 UNRESOLVED: test2-unresolved-xpass
 UNRESOLVED: test3-unresolved-fail
@@ -58,9 +66,11 @@
 UNRESOLVED: test6-unresolved-unsupported
 UNRESOLVED: test7-unresolved-untested
 
+Running tests-8.exp ...
 PASS: test1-pass-and-fails
 FAIL: test1-pass-and-fails
 
+Running tests-9.exp ...
 FAIL: test1-fail-pass execution
 
 ERROR: (DejaGnu) proc "scan-dump-tree-not fail_test optimized 1" does not exist.