hg: openjfx/10-dev/rt: 8194144: com.oracle.tools.packager.Bundler.execute() returns null on MAC

[victor.drozdov at oracle.com]

Changeset: e2e750c9aa4a
Author:    vdrozdov
Date:      2018-01-08 22:08 -0800
URL:       http://hg.openjdk.java.net/openjfx/10-dev/rt/rev/e2e750c9aa4a

8194144: com.oracle.tools.packager.Bundler.execute() returns null on MAC
Reviewed-by: kcr

! modules/jdk.packager/src/main/java/com/oracle/tools/packager/IOUtils.java
! modules/jdk.packager/src/main/java/jdk/packager/internal/legacy/builders/AbstractAppImageBuilder.java
! modules/jdk.packager/src/main/java/jdk/packager/internal/legacy/builders/linux/LinuxAppImageBuilder.java
! modules/jdk.packager/src/main/java/jdk/packager/internal/legacy/builders/mac/MacAppImageBuilder.java
! modules/jdk.packager/src/main/java/jdk/packager/internal/legacy/builders/windows/WindowsAppImageBuilder.java