hg: openjfx/jfx-dev/rt: 8195074: Improve signing mechanism on Mac 10.12+

[victor.drozdov at oracle.com]

Changeset: e93e46dabb83
Author:    vdrozdov
Date:      2018-01-25 11:44 -0800
URL:       http://hg.openjdk.java.net/openjfx/jfx-dev/rt/rev/e93e46dabb83

8195074: Improve signing mechanism on Mac 10.12+
Reviewed-by: kcr

! modules/jdk.packager/src/main/java/com/oracle/tools/packager/IOUtils.java
! modules/jdk.packager/src/main/java/com/oracle/tools/packager/Platform.java
! modules/jdk.packager/src/main/java/com/oracle/tools/packager/mac/MacAppStoreBundler.java
! modules/jdk.packager/src/main/java/com/oracle/tools/packager/mac/MacPkgBundler.java
! modules/jdk.packager/src/main/java/jdk/packager/internal/legacy/builders/mac/MacAppImageBuilder.java
! modules/jdk.packager/src/main/resources/com/oracle/tools/packager/mac/MacPkgBundler.properties
! modules/jdk.packager/src/main/resources/jdk/packager/internal/legacy/builders/mac/MacAppImageBuilder.properties