hg: jdk/sandbox: Now I believe this compiles with gcc 4.8, 4.9, 5.0, 6.0, 7.0.

[magnus.ihse.bursie at oracle.com]

Changeset: b73757919fba
Author:    ihse
Date:      2018-03-05 22:45 +0100
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/b73757919fba

Now I believe this compiles with gcc 4.8, 4.9, 5.0, 6.0, 7.0.

! make/hotspot/lib/CompileJvm.gmk
! make/lib/Lib-java.security.jgss.gmk
! make/lib/NetworkingLibraries.gmk