Bugfixes for dist make target

Now we can run tests from the tarball generated by make dist

Makefile.am

 SUBDIRS=lodel progs plugins
-EXTRA_DIST=doc
+EXTRA_DIST=doc plugins runtest install-tpl examples tests
 
 lodel2datadir=$(datadir)/lodel2
 lodel2_localstate_DATA =
 	$(python) scripts/refreshdyn.py examples/em_test.pickle $(dyncode_filename) && echo -e "\n\nCode generated in $(dyncode_filename)"
 
 # run tests
-tests:
+check:
 	./runtest -v
 
-check: tests
-checks: tests
+unittest: check
 
 #Cleaning documentation and dyncode
 clean-local: cleandoc

README

 	Run unit tests :
 		make check
 		#or
-		make tests
+		make unittest
 
 Lodel2 instance management utilities :
 	SLIM : Simple Lodel Instance Manager

runtest

 PYTHON='env python3'
 testdir=$(mktemp -d)
 rmdir $testdir
-./progs/create_instance test_instance $testdir ./install ./examples/em_file.pickle $(dirname $0)
+./progs/create_instance test_instance $testdir ./install-tpl ./examples/em_file.pickle $(dirname $0)
 cp -R examples $testdir
 cp -R tests $testdir
 cd $testdir