Log Message:
-----------
use standard literal formatters for strings, booleans, and guids.
Modified Files:
--------------
Npgsql2/src/Npgsql/SqlGenerators:
VisitedExpression.cs (r1.10 -> r1.11)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/SqlGenerators/VisitedExpression.cs.diff?r1=1.10&r2=1.11)