hg: jdk/jdk: 8219986: Change to Xcode 10.1 for building on Macosx at Oracle

[erik.joelsson at oracle.com]

Changeset: 271f75d4b494
Author:    erikj
Date:      2019-03-04 11:28 -0800
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/271f75d4b494

8219986: Change to Xcode 10.1 for building on Macosx at Oracle
Reviewed-by: tbell

! make/conf/jib-profiles.js
+ make/devkit/createMacosxDevkit.sh
- make/devkit/createMacosxDevkit6.sh
- make/devkit/createMacosxDevkit9.sh