Add the ability to run individual tests.

    make t/specific.t

These tests are verbose, while 'make test' is terse.

Also added 't/' to PERL6LIB so TestML tests can find their Bridge classed there.

ufo

@@ -127,15 +127,16 @@ sub MAIN($filename = 'Makefile', Bool :$alpha) {
 
     my $makefile = $filename eq '-' ?? $*OUT !! open $filename, :w;
     $makefile.say(qq[PERL6=$binary]);
-    $makefile.say(qq[PERL6LIB='$cwd/lib']);
+    $makefile.say(qq[PERL6LIB='$cwd/t:$cwd/lib']);
     $makefile.say(q[]);
 
     $makefile.say($sources);
 
     $makefile.say(qq[
 PIRS=\$(patsubst %.pm6,%.pir,\$(SOURCES:.pm=.pir))
+TESTS=\$(shell find t -name '*.t')
 
-.PHONY: test clean
+.PHONY: test clean force
 
 all: \$(PIRS)
 
@@ -149,7 +150,10 @@ clean:
 \trm -f \$(PIRS)
 
 test: all
-\tenv PERL6LIB=\$(PERL6LIB) prove -e '\$(PERL6)' -r --nocolor t/]);
+\tenv PERL6LIB=\$(PERL6LIB) prove -e '\$(PERL6)' -r --nocolor t/
+
+\$(TESTS): force
+\tenv PERL6LIB=\$(PERL6LIB) prove -v -e '\$(PERL6)' -r --nocolor \$@]);
 
     sub write-install($extension?) {
         my %dirs;