[svn r330] Implemented synchronized statements. Changed the tryfinally handlers to a more generalized EnclosingHandler. Changed ClassInfoS to be mutable so they can be used as locks. Added new BB after throw ala return/break etc.

module cond1;

void main()
{
    double a = 2;
    double b = 4;
    double c = (a > 0) ? a : b;
}