Log Message:-----------Pass more tests by supporting more edm functions and better variable substitution
Modified Files:-------------- Npgsql2/src/Npgsql/SqlGenerators: SqlBaseGenerator.cs (r1.5 -> r1.6) (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/npgsql/Npgsql2/src/Npgsql/SqlGenerators/SqlBaseGenerator.cs.diff?r1=1.5&r2=1.6)
