Updating version to 2.1.1

Branch
------
REL_2_1_STABLE

Details
-------
http://git.postgresql.org/gitweb?p=slony1-engine.git;a=commitdiff;h=b0ab3e4138679f2ba9eea41e316d0b96b84dd1d5

Modified Files
--------------
config.h.in                  |    4 ++--
configure.ac                 |    2 +-
src/backend/slony1_funcs.sql |    2 +-
3 files changed, 4 insertions(+), 4 deletions(-)