RFR: JDK-8129503: The SOURCE value in release file of JDK 9 doesn't contain changesets since b49

[Erik Joelsson]

Hello,

Please review this small fix for the source-tips generation, which is 
used in the release file to identify the exact sources a build was made 
from.

In JDK-8065576, we added "-e -o pipefail" to the default shell args. 
This causes shell expressions which are chained with ';' to abort when a 
sub expression fails. In the definition for REPO_LIST, the first 'ls' 
would fail if there were no .hg files to be found and so the second 'ls' 
would never be run to find the .hgtip files. I see no reason for 
separate calls to 'ls'. The -d flag does not hurt when looking for the 
.hgtip files.

Bug: https://bugs.openjdk.java.net/browse/JDK-8129503

Patch:
diff -r eed77fcd7771 make/common/MakeBase.gmk
--- a/make/common/MakeBase.gmk
+++ b/make/common/MakeBase.gmk
@@ -369,8 +369,9 @@
  HGTIP_FILENAME=.hgtip
  HG_SEARCH = ./REPO ./*/REPO ./*/*/REPO ./*/*/*/REPO
  REPO_LIST = $(patsubst ./%,%,$(patsubst %/,%,$(sort $(dir \
-    $(shell $(CD) $(SRC_ROOT) ; ( $(LS) -d 
$(HG_SEARCH:%/REPO=%/$(HG_DIRECTORY)) ; \
-        $(LS) $(HG_SEARCH:%/REPO=%/$(HGTIP_FILENAME)) ) \
+    $(shell $(CD) $(SRC_ROOT) ; \
+        $(LS) -d $(HG_SEARCH:%/REPO=%/$(HG_DIRECTORY)) \
+            $(HG_SEARCH:%/REPO=%/$(HGTIP_FILENAME)) \
          2> /dev/null)))))

  # Emit the repo:tip pairs to $@


/Erik