[Xen-changelog] Improve changeset identification to work from src tar ball too.

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User iap10@xxxxxxxxxxxxxxxxxxxxx
# Node ID 20008f3ac9f5ab426382f16af8cc49780d7359ef
# Parent  9a7d86b8147df0e2a14989b501b60863409010fd

Improve changeset identification to work from src tar ball too.
Signed-off-by: ian.pratt@xxxxxxxxxxxx

diff -r 9a7d86b8147d -r 20008f3ac9f5 xen/Makefile
--- a/xen/Makefile      Wed Jul  6 14:23:39 2005
+++ b/xen/Makefile      Wed Jul  6 15:21:25 2005
@@ -100,7 +100,7 @@
            -e 's/@@version@@/$(XEN_VERSION)/g' \
            -e 's/@@subversion@@/$(XEN_SUBVERSION)/g' \
            -e 's/@@extraversion@@/$(XEN_EXTRAVERSION)/g' \
-           -e 's!@@changeset@@!$(shell (hg tip | awk 
'/changeset/{CS=$$2};{FS="date:[ ]+"}/date/{D=$$2}; END {print D, CS}') 
2>/dev/null || echo information unavailable)!g' \
+           -e 's!@@changeset@@!$(shell (hg parents | awk -F: 
'/^changeset/{CS=$$3};{FS="date:[ ]+"}/^date/{D=$$2}; END {print D, CS}') 
2>/dev/null || (head -6 ChangeLog | awk -F: '/^changeset/{CS=$$3};{FS="date:[ 
]+"}/^date/{D=$$2}; END {print D, CS}') 2>/dev/null || echo information 
unavailable)!g' \
            < include/xen/compile.h.in > $@.new
        @cat include/xen/banner.h >> $@.new
        @mv -f $@.new $@

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