Upgrades Streaming in * Constellation Software : Cantor Fitzgerald ups to buy; target to C$175 from C$150 * Constellation Software : CIBC raises target to C$160 from C$150; sector performer * Constellation Software : National Bank Financial ups target to C$175 from C$150 * Constellation Software : RBC raises target to C$180 from C$165; rating outperform * Constellation Software : BMO raises target to C$165 from C$135; market perform