hg: jigsaw/jake/nashorn: Move Nashorn build to -Xpatch

[alan.bateman at oracle.com]

Changeset: 50ab20e1445f
Author:    alanb
Date:      2015-09-26 15:01 +0100
URL:       http://hg.openjdk.java.net/jigsaw/jake/nashorn/rev/50ab20e1445f

Move Nashorn build to -Xpatch

! buildtools/nasgen/build.xml
! make/BuildNashorn.gmk
! make/build.xml
! make/project.properties
! test/script/currently-failing/JDK-8055034.js