patch for rs.previous and test case as well as patch for allowing server and port to be specified in test cases

tag it Release Candidate 1, as previously discussed

platform-dependent results, as per example from Larry Rosenman.

limit on the number of simultaneous connections.  Andrew Dunstan, with
review by Tom Lane.

When --enable-debug is used, then the default CFLAGS for non-GCC is just
-g without -O.

Backpatch enhancement of Autoconf inline test that detects problems with
the HP C compiler.

Neil Conway.

Christopher Kings-Lynne

process the command as though it were issued by the object owner.
This prevents creating weird scenarios in which the same privileges
may appear to flow from different sources, and ensures that a superuser
can in fact revoke all privileges if he wants to.  In particular this
means that the regression tests work when run by a superuser other than
the original bootstrap userid.  Per report from Larry Rosenman.

behavior of malloc and realloc when request size is 0.  Fix escape
sequence recognizer so that only valid 3-digit octal sequences are
treated as escape sequences ... isdigit() is not a correct test.

rule into the rule.sql since it affects the latter if run in paralell.

Jan