cache: create `wcache` directory at init time

The cache directory will be needed very quickly, so it seems simpler to create
it early to make sure it has the same owner and permission than the other
directory in the repository.

mercurial/localrepo.py

@@ -3012,6 +3012,7 b' def createrepository(ui, path, createopt'
     hgvfs.makedir(notindexed=True)
     if 'sharedrepo' not in createopts:
         hgvfs.mkdir(b'cache')
+    hgvfs.mkdir(b'wcache')
 
     if b'store' in requirements and 'sharedrepo' not in createopts:
         hgvfs.mkdir(b'store')

tests/test-bundle.t

@@ -212,6 +212,7 b" Make sure bundlerepo doesn't leak tempfi"
   cache
   requires
   store
+  wcache
 
 Pull ../full.hg into empty (with hook)
 

tests/test-empty.t

@@ -23,6 +23,7 b' Check the basic files created:'
   cache
   requires
   store
+  wcache
 
 Should be empty:
 

tests/test-inherit-mode.t

@@ -42,7 +42,7 b' just in case somebody has a strange $TMP'
   $ hg init repo
   $ cd repo
 
-  $ chmod 0770 .hg/store .hg/cache
+  $ chmod 0770 .hg/store .hg/cache .hg/wcache
 
 before commit
 store can be written by the group, other files cannot
@@ -54,6 +54,7 b' store is setgid'
   00770 ./.hg/cache/
   00600 ./.hg/requires
   00770 ./.hg/store/
+  00770 ./.hg/wcache/
 
   $ mkdir dir
   $ touch foo dir/bar
@@ -120,6 +121,7 b' group can write everything'
   00770 ../push/.hg/cache/
   00660 ../push/.hg/requires
   00770 ../push/.hg/store/
+  00770 ../push/.hg/wcache/
 
   $ umask 077
   $ hg -q push ../push
@@ -155,6 +157,7 b' group can still write everything'
   00660 ../push/.hg/undo.branch
   00660 ../push/.hg/undo.desc
   00660 ../push/.hg/undo.dirstate
+  00770 ../push/.hg/wcache/
 
 
 Test that we don't lose the setgid bit when we call chmod.

tests/test-subrepo.t

@@ -1242,6 +1242,7 b' Check that share works with subrepo'
   ../shared/subrepo-1/.hg/hgrc
   ../shared/subrepo-1/.hg/requires
   ../shared/subrepo-1/.hg/sharedpath
+  ../shared/subrepo-1/.hg/wcache
   ../shared/subrepo-2
   ../shared/subrepo-2/.hg
   ../shared/subrepo-2/.hg/branch