histedit: renaming parts to which _histedit was split

I recently broke _histedit into multiple functions, each of which
had 'action' in its name. This is a little bit confusing since 'action'
is the word for an individual histedit plan item (such as edit or pick).
To avoid this confusion, these functions are now renamed to contain
'histedit' as part of their names.

hgext/histedit.py

@@ -1054,22 +1054,22 b' def _histedit(ui, repo, state, *freeargs'
         state.read()
         state = bootstrapcontinue(ui, state, opts)
     elif goal == goaleditplan:
-        _editplanaction(ui, repo, state, rules)
+        _edithisteditplan(ui, repo, state, rules)
         return
     elif goal == goalabort:
-        _abortaction(ui, repo, state)
+        _aborthistedit(ui, repo, state)
         return
     else:
         # goal == goalnew
-        _newaction(ui, repo, state, revs, freeargs, opts)
+        _newhistedit(ui, repo, state, revs, freeargs, opts)
 
-    _continueaction(ui, repo, state)
-    _finishaction(ui, repo, state)
+    _continuehistedit(ui, repo, state)
+    _finishhistedit(ui, repo, state)
 
-def _continueaction(ui, repo, state):
-    """This action runs after either:
+def _continuehistedit(ui, repo, state):
+    """This function runs after either:
     - bootstrapcontinue (if the goal is 'continue')
-    - _newaction (if the goal is 'new')
+    - _newhistedit (if the goal is 'new')
     """
     # preprocess rules so that we can hide inner folds from the user
     # and only show one editor
@@ -1095,7 +1095,7 b' def _continueaction(ui, repo, state):'
     state.write()
     ui.progress(_("editing"), None)
 
-def _finishaction(ui, repo, state):
+def _finishhistedit(ui, repo, state):
     """This action runs when histedit is finishing its session"""
     repo.ui.pushbuffer()
     hg.update(repo, state.parentctxnode, quietempty=True)
@@ -1144,7 +1144,7 b' def _finishaction(ui, repo, state):'
     if repo.vfs.exists('histedit-last-edit.txt'):
         repo.vfs.unlink('histedit-last-edit.txt')
 
-def _abortaction(ui, repo, state):
+def _aborthistedit(ui, repo, state):
     try:
         state.read()
         tmpnodes, leafs = newnodestoabort(state)
@@ -1181,7 +1181,7 b' def _abortaction(ui, repo, state):'
     finally:
             state.clear()
 
-def _editplanaction(ui, repo, state, rules):
+def _edithisteditplan(ui, repo, state, rules):
     state.read()
     if not rules:
         comment = geteditcomment(node.short(state.parentctxnode),
@@ -1201,7 +1201,7 b' def _editplanaction(ui, repo, state, rul'
     state.actions = actions
     state.write()
 
-def _newaction(ui, repo, state, revs, freeargs, opts):
+def _newhistedit(ui, repo, state, revs, freeargs, opts):
     outg = opts.get('outgoing')
     rules = opts.get('commands', '')
     force = opts.get('force')