[2.2 BRANCH] No strict aliasing

[Dr Andrew John Hughes]

The attached patch turns off strict aliasing when building
ExtensionSubtables.cpp which otherwise produces the following
warnings:

../../../src/share/native/sun/font/layout/ExtensionSubtables.cpp:57:31: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]

Ok for the 2.2 branch?  This is already in HEAD.
-- 
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

PGP Key: 248BDC07 (https://keys.indymedia.org/)
Fingerprint = EC5A 1F5E C0AD 1D15 8F1F  8F91 3B96 A578 248B DC07
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# HG changeset patch
# User andrew
# Date 1336136728 -3600
# Node ID fd327c7e74dab7f24448aa21691c75411eaf5626
# Parent  5f96377cf55e0233ef502e77c29e5510ea8c5a4e
Turn off strict aliasing for ExtensionSubtables.cpp

diff --git a/make/sun/font/Makefile b/make/sun/font/Makefile
--- a/make/sun/font/Makefile
+++ b/make/sun/font/Makefile
@@ -90,6 +90,11 @@
 
 endif # PLATFORM
 
+# Turn off aliasing with GCC for ExtensionSubtables.cpp
+ifeq ($(PLATFORM), linux)
+  OTHER_CXXFLAGS += -fno-strict-aliasing
+endif
+
 #In the non-OpenJDK mode we need to build T2K
 ifndef OPENJDK
 t2k:
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