update to support scala 2.10.0.  Also updated  specs2, scaliest, scala-maven-plugin, surefire plugin. Please note the discrepancy in the scala version prefix used by specs2 and scalatest. As a result have introduced a new property "scala.tools.version". Also, removed the #set($scalaVersion) template variable as it seemed redundant and confusing. Maybe we should get rid of the other template #set($name) also.