Path: if TC is none, partials wouldn't post

added H parameter to linuxcnc post for tool length offset

src/Mod/Path/PathScripts/post/linuxcnc_post.py

@@ -225,7 +225,7 @@ def parse(pathobj):
     # params = ['X','Y','Z','A','B','I','J','K','F','S'] #This list control
     # the order of parameters
     # linuxcnc doesn't want K properties on XY plane  Arcs need work.
-    params = ['X', 'Y', 'Z', 'A', 'B', 'I', 'J', 'F', 'S', 'T', 'Q', 'R', 'L']
+    params = ['X', 'Y', 'Z', 'A', 'B', 'I', 'J', 'F', 'S', 'T', 'Q', 'R', 'L', 'H']
 
     if hasattr(pathobj, "Group"):  # We have a compound or project.
         # if OUTPUT_COMMENTS: