hg: build-infra/jdk9/hotspot: * Sort the symbol file alphabetically

[magnus.ihse.bursie at oracle.com]

Changeset: 769d7b7f96e4
Author:    ihse
Date:      2016-01-30 08:38 +0100
URL:       http://hg.openjdk.java.net/build-infra/jdk9/hotspot/rev/769d7b7f96e4

* Sort the symbol file alphabetically
* Allow comments in symbol files

! makefiles/lib/JvmMapfile.gmk
! makefiles/symbols/symbols-shared