psqlodbc - psqlodbc: Improve connection error message in case of invalid

Log Message:
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Improve connection error message in case of invalid protocol characters.

Modified Files:
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psqlodbc:
connection.c (r1.145 -> r1.146)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/connection.c.diff?r1=1.145&r2=1.146)
info.c (r1.132 -> r1.133)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/info.c.diff?r1=1.132&r2=1.133)
version.h (r1.73 -> r1.74)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/psqlodbc/psqlodbc/version.h.diff?r1=1.73&r2=1.74)