context: rename divergent into contentdivergent

context: rename divergent into contentdivergent

Rename divergent context method into contentdivergent and add a deprecation
warning on divergent.

Only update all callers to keep the patch straightforward.

The renaming is done according to
https://www.mercurial-scm.org/wiki/CEDVocabulary.

Differential Revision: https://phab.mercurial-scm.org/D240

--- a/mercurial/context.py	Wed Aug 02 18:50:32 2017 +0200
+++ b/mercurial/context.py	Wed Aug 02 19:02:48 2017 +0200
@@ -221,6 +221,12 @@
         return self.rev() in obsmod.getrevs(self._repo, 'bumped')
 
     def divergent(self):
+        msg = ("'context.divergent' is deprecated, "
+               "use 'context.contentdivergent'")
+        self._repo.ui.deprecwarn(msg, '4.4')
+        return self.contentdivergent()
+
+    def contentdivergent(self):
         """Is a successors of a changeset with multiple possible successors set
 
         Only non-public and non-obsolete changesets may be divergent.
@@ -229,7 +235,7 @@
 
     def troubled(self):
         """True if the changeset is either unstable, bumped or divergent"""
-        return self.orphan() or self.bumped() or self.divergent()
+        return self.orphan() or self.bumped() or self.contentdivergent()
 
     def troubles(self):
         """Keep the old version around in order to avoid breaking extensions
@@ -244,7 +250,7 @@
             troubles.append('orphan')
         if self.bumped():
             troubles.append('bumped')
-        if self.divergent():
+        if self.contentdivergent():
             troubles.append('divergent')
         return troubles
 
@@ -261,7 +267,7 @@
             instabilities.append('orphan')
         if self.bumped():
             instabilities.append('phase-divergent')
-        if self.divergent():
+        if self.contentdivergent():
             instabilities.append('content-divergent')
         return instabilities