[runtime] Include the al script in temporary installation directory

This is needed as the 4.0 profile calls 'al' (which is defaults to 4.0) and not
'al2' and if Mono older than 2.8 is installed on the machine, 'al' coming from it
will fail to work with the current Mono and thus some tests will fail.

The commit should fix the 300+ failing tests on the build bots.

runtime/Makefile.am

@@ -106,7 +106,7 @@ clean-local:
 
 endif BUILD_MCS
 
-TEST_SUPPORT_FILES = $(tmpinst)/bin/mono $(tmpinst)/bin/ilasm $(tmpinst)/bin/gmcs $(tmpinst)/bin/dmcs $(tmpinst)/bin/al2
+TEST_SUPPORT_FILES = $(tmpinst)/bin/mono $(tmpinst)/bin/ilasm $(tmpinst)/bin/gmcs $(tmpinst)/bin/dmcs $(tmpinst)/bin/al2 $(tmpinst)/bin/al
 
 # now a misnomer, but it'll go away soon enough.
 if ENABLE_NUNIT_TESTS
@@ -202,6 +202,12 @@ $(tmpinst)/bin/al2: $(tmpinst)/bin/mono Makefile
 	echo 'exec "'"$$r/$(tmpinst)/bin/mono"'" "'"$$m/class/lib/net_2_0/al.exe"'" "$$@"' >> $@ ; \
 	chmod +x $@
 
+$(tmpinst)/bin/al: $(tmpinst)/bin/mono Makefile
+	echo '#! /bin/sh' > $@ ; \
+	r=`pwd`; m=`cd $(mcs_topdir) && pwd`; \
+	echo 'exec "'"$$r/$(tmpinst)/bin/mono"'" "'"$$m/class/lib/net_4_0/al.exe"'" "$$@"' >> $@ ; \
+	chmod +x $@
+
 test-support-files: $(TEST_SUPPORT_FILES)
 	@: