Hmm...  Looks like a new-style context diff to me...
The text leading up to this was:
--------------------------
|diff -cprN head/src/backend/utils/adt/ruleutils.c work/src/backend/utils/adt/ruleutils.c
|*** head/src/backend/utils/adt/ruleutils.c	2010-01-04 09:10:26.638773000 +0900
|--- work/src/backend/utils/adt/ruleutils.c	2010-01-12 17:51:27.595666819 +0900
--------------------------
Patching file src/backend/utils/adt/ruleutils.c using Plan A...
Hunk #1 failed at 518.
Hunk #2 failed at 572.
Hunk #3 succeeded at 636.
2 out of 3 hunks failed--saving rejects to src/backend/utils/adt/ruleutils.c.rej
Hmm...  The next patch looks like a new-style context diff to me...
The text leading up to this was:
--------------------------
|diff -cprN head/src/bin/psql/describe.c work/src/bin/psql/describe.c
|*** head/src/bin/psql/describe.c	2010-01-04 09:10:26.638773000 +0900
|--- work/src/bin/psql/describe.c	2010-01-12 17:51:27.597646243 +0900
--------------------------
Patching file src/bin/psql/describe.c using Plan A...
Hunk #1 succeeded at 1854 with fuzz 2.
Hmm...  The next patch looks like a new-style context diff to me...
The text leading up to this was:
--------------------------
|diff -cprN head/src/test/regress/expected/triggers.out work/src/test/regress/expected/triggers.out
|*** head/src/test/regress/expected/triggers.out	2009-11-24 10:04:57.883822000 +0900
|--- work/src/test/regress/expected/triggers.out	2010-01-12 17:53:21.142635393 +0900
--------------------------
Patching file src/test/regress/expected/triggers.out using Plan A...
Hunk #1 succeeded at 375.
Hunk #2 succeeded at 387.
Hunk #3 succeeded at 416.
Hmm...  The next patch looks like a new-style context diff to me...
The text leading up to this was:
--------------------------
|diff -cprN head/src/test/regress/sql/triggers.sql work/src/test/regress/sql/triggers.sql
|*** head/src/test/regress/sql/triggers.sql	2009-11-24 10:04:57.883822000 +0900
|--- work/src/test/regress/sql/triggers.sql	2010-01-12 17:51:27.597646243 +0900
--------------------------
Patching file src/test/regress/sql/triggers.sql using Plan A...
Hunk #1 succeeded at 304.
done