hg: icedtea/jdk7/jdk: Allow user to set STATIC_CXX

[ahughes at redhat.com]

Changeset: 3b8e4a1215bb
Author:    andrew
Date:      2011-03-29 14:22 +0100
URL:       http://hg.openjdk.java.net/icedtea/jdk7/jdk/rev/3b8e4a1215bb

Allow user to set STATIC_CXX

! make/common/shared/Compiler-gcc.gmk