hg: graal/graal-compiler: Prevent false positives in change detection of second lowering round.

[doug.simon at oracle.com]

Changeset: 9dafd1dc5ff9
Author:    Roland Schatz <roland.schatz at oracle.com>
Date:      2015-07-30 16:38 +0200
URL:       http://hg.openjdk.java.net/graal/graal-compiler/rev/9dafd1dc5ff9

Prevent false positives in change detection of second lowering round.

! graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/LoweringPhase.java
! graal/com.oracle.graal.phases/src/com/oracle/graal/phases/schedule/SchedulePhase.java