6997210: Solaris 11 has no development support for DGA: Cannot build JDK

Reviewed-by: bae, ohair

make/sun/Makefile

@@ -42,7 +42,15 @@ ifneq ($(PLATFORM), windows)
   ifndef OPENJDK
     ifeq ($(PLATFORM), solaris)
       ifneq ($(ARCH), amd64)
-        DGA_SUBDIR = jdga
+        # Solaris 11 does not have support for new compilation of DGA code.
+        OS_VERSION = $(shell uname -r)
+        OS_MAJOR_VERSION := $(call MajorVersion,$(OS_VERSION))
+        OS_MINOR_VERSION := $(call MinorVersion,$(OS_VERSION))
+        ifeq ($(shell $(EXPR) $(OS_MAJOR_VERSION) == 5), 1)
+          ifeq ($(shell $(EXPR) $(OS_MINOR_VERSION) \<= 10), 1)
+            DGA_SUBDIR = jdga
+          endif
+        endif
       endif
     endif
   endif