Add -package array to SRC_HC_OPTS

To make batch linking work now that haskell98 is not automatically linked.

mk/boilerplate.mk

@@ -66,6 +66,13 @@ TOP := $(NOFIB_TOP)
 
 SRC_HC_OPTS += $(NoFibHcOpts) -Rghc-timing
 
+# -package array is needed for GHC 7.0.1 and later, as the haskell98 package
+# is no longer linked by default.  We would like to use
+#    -hide-all-packages -package haskell2010
+# instead, but there is at least one program that uses a non-haskell2010
+# library module (fibheaps uses Control.Monad.ST)
+SRC_HC_OPTS += -package array
+
 ifeq "$(WithNofibHc)" ""
 HC	   = $(GHC_TOP)/$(GHC_STAGE2)
 MKDEPENDHS := $(GHC_TOP)/$(GHC_STAGE2)  # ToDo: wrong, if $(WithNofibHc) isn't GHC.