Log Message:
-----------
Further review of xact.c state machine for nested transactions. Fix
problems with starting subtransactions inside already-failed transactions.
Clean up some comments.
Modified Files:
--------------
pgsql-server/src/backend/access/transam:
xact.c (r1.169 -> r1.170)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/access/transam/xact.c.diff?r1=1.169&r2=1.170)
pgsql-server/src/test/regress/expected:
transactions.out (r1.4 -> r1.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/test/regress/expected/transactions.out.diff?r1=1.4&r2=1.5)
pgsql-server/src/test/regress/sql:
transactions.sql (r1.4 -> r1.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/test/regress/sql/transactions.sql.diff?r1=1.4&r2=1.5)
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