[svn r18] * Initial support for switch statements - No string switches yet. * Moved Statement::toIR definitions into gen/statements.c - toir.c is still too big. * Removed some BB bloat with ScopeStatements.

module scope1;

void main()
{
    printf("1\n");
    {
        scope(exit) printf("2\n");
    }
    printf("3\n");
}