hg: jdk8/tl/langtools: 8014365: Restore Objects.requireNonNull(T, Supplier)

[joe . darcy]

Changeset: 1c43236f6d69
Author:    darcy
Date:      2013-05-10 14:31 -0700
URL:       http://hg.openjdk.java.net/jdk8/tl/langtools/rev/1c43236f6d69

8014365: Restore Objects.requireNonNull(T, Supplier<String>)
Reviewed-by: jjg

! makefiles/BuildLangtools.gmk