Add a bindisttest directory

After
    make binary-dist stage=2
you can run make in bindisttest/ to test it

Makefile

@@ -238,8 +238,6 @@ install-docs ::
 #	binary-dist is a GHC addition for binary distributions
 # 
 
-BIN_DIST_TARBALL=ghc-$(ProjectVersion)-$(TARGETPLATFORM).tar.bz2
-
 binary-dist::
 	-rm -rf $(BIN_DIST_DIR)
 	-$(RM) $(BIN_DIST_DIR).tar.gz
@@ -564,6 +562,9 @@ MAINTAINER_CLEAN_FILES += VERSION
 extraclean::
 	$(RM) -rf autom4te.cache
 
+clean distclean ::
+	$(MAKE) -C bindisttest $@
+
 # -----------------------------------------------------------------------------
 
 # Turn off target.mk's rules for 'all', 'boot' and 'install'.

bindisttest/HelloWorld.hs

+
+module Main (main) where
+
+main :: IO ()
+main = putStr "Hello world!"

bindisttest/Makefile

+
+.PHONY: default_target
+
+default_target: all
+
+# Ideally we'd just include something to give us variables
+# for paths and arguments to tools etc, and those set in mk/build.mk.
+TOP=..
+include $(TOP)/mk/boilerplate.mk
+
+INST_DIR = $(FPTOOLS_TOP_ABS)/bindisttest/installed
+
+all:
+	$(RM) -rf installed
+	$(RM) -rf ghc*
+	$(RM) HelloWorld HelloWorld.o HelloWorld.hi output
+	$(TAR) -jxf $(BIN_DIST_TARBALL)
+	cd $(BIN_DIST_NAME) && ./configure --prefix=$(INST_DIR)
+	cd $(BIN_DIST_NAME) && make install
+	$(INST_DIR)/bin/ghc --make HelloWorld
+	./HelloWorld > output
+	$(CONTEXT_DIFF) output expected_output
+
+clean distclean:
+	$(RM) -rf installed
+	$(RM) -rf ghc*
+	$(RM) HelloWorld HelloWorld.o HelloWorld.hi output
+
+# Ignore a load of other standard targets
+install install-docs doc:
+	@:
+

bindisttest/expected_output

+Hello world!
\ No newline at end of file

mk/config.mk.in

@@ -507,6 +507,7 @@ FPTOOLS_TOP_ABS_PLATFORM = @hardtop_plat@
 BIN_DIST_NAME=ghc-$(ProjectVersion)
 BIN_DIST_TOPDIR=$(FPTOOLS_TOP_ABS)
 BIN_DIST_DIR=$(BIN_DIST_TOPDIR)/$(BIN_DIST_NAME)
+BIN_DIST_TARBALL=$(BIN_DIST_TOPDIR)/$(BIN_DIST_NAME)-$(TARGETPLATFORM).tar.bz2
 
 #
 # Installation directories, we don't use half of these,