Avoid (some) hard-coded pathes in tests

tests/.gitignore

@@ -2,24 +2,24 @@
 *.log
 *.trs
 .deps/
-chomp
-copyfile
-dir
-fexist
-fisdir
-fopenf
-fsendfile
-lfile
-makepath
-pidfile
-printhdr
-progress
-rsync
-str
-strmatch
-systemf
-tempfile
-touch
-tree
-which
-yorn
+/chomp
+/copyfile
+/dir
+/fexist
+/fisdir
+/fopenf
+/fsendfile
+/lfile
+/makepath
+/pidfile
+/printhdr
+/progress
+/rsync
+/str
+/strmatch
+/systemf
+/tempfile
+/touch
+/tree
+/which
+/yorn