Added Make target check and installcheck

Notice that this breaks previous "check" target, that I think
was anyway useless.

check: does the check with the non-installed plumed
installedcheck: does the check with the installed plumed

Makefile

@@ -13,7 +13,7 @@ SUBDIRS := $(SRCDIRS) user-doc developer-doc regtest macports vim astyle
 SUBDIRSCLEAN:=$(addsuffix .clean,$(SUBDIRS))
 
      
-.PHONY: all lib clean $(SRCDIRS) doc docclean check cppcheck distclean all_plus_docs macports codecheck plumedcheck astyle
+.PHONY: all lib clean $(SRCDIRS) doc docclean check installcheck cppcheck distclean all_plus_docs macports codecheck plumedcheck astyle
 
 # if machine dependent configuration has been found:
 ifdef GCCDEP
@@ -59,8 +59,15 @@ docs:
 	$(MAKE) doc
 
 # regtests
-check: src test
-	$(MAKE) -C regtest
+# perform tests using non-installed plumed
+check:
+	PLUMED_PREPEND_PATH="$(realpath .)/src/lib" $(MAKE) -C regtest
+	$(MAKE) -C regtest checkfail
+
+# perform tests using the installed version of plumed
+installcheck:
+	PLUMED_PREPEND_PATH="$(bindir)" PLUMED_PROGRAM_NAME="$(program_name)" $(MAKE) -C regtest
+	$(MAKE) -C regtest checkfail
 
 else
 

regtest/scripts/run

 #!/bin/bash
 
+if test -n "$PLUMED_PREPEND_PATH" ; then
+  PATH="$PLUMED_PREPEND_PATH:$PATH"
+fi
+
 export valgrind=env
 
 for opt in ${*}
@@ -46,7 +50,7 @@ echo "++ Arguments: $arg"
 echo "++ Processors: $mpiprocs"
 
 mpi=env
-plumed=plumed
+plumed="${PLUMED_PROGRAM_NAME:-plumed}"
 
 root=$($plumed --no-mpi info --root)