psqlodbc - psqlodbc: Improve the handling of UUID type especially to

Log Message:
-----------
Improve the handling of UUID type especially to support IMPORT or LINK
in MS Access.

Modified Files:
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psqlodbc:
convert.c (r1.180 -> r1.181)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/convert.c.diff?r1=1.180&r2=1.181)
pgtypes.c (r1.89 -> r1.90)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/pgtypes.c.diff?r1=1.89&r2=1.90)
version.h (r1.140 -> r1.141)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/version.h.diff?r1=1.140&r2=1.141)