doc/* - Add skeletons for 5.x. Rename some shareable files.

doc/5.x-final.md

+# CiviCRM v5.x.0: Publish a stable release

doc/5.x-patch.md

+# CiviCRM v5.x.x: Publish a patch release

doc/README.md

@@ -3,10 +3,21 @@
  * CiviCRM v4.6.x
    * [Publish a final release](4.6-final.md)
    * [Announce a final release](any-announce.md)
- * CiviCRM v4.7.x
+ * CiviCRM v4.7.x (**out-of-date instructions**)
    * [Publish a release candidate](4.7-rc.md)
-   * [Evaluate a release candidate](4.7-rc-eval.md)
+   * [Evaluate a release candidate](any-rc-eval.md)
    * [Publish a final release](4.7-final.md)
    * [Announce a final release](any-announce.md)
+ * CiviCRM v5.x
+   * [Publish a release candidate](5.x-rc.md)
+   * [Evaluate a release candidate](any-rc-eval.md)
+   * [Publish a stable release](5.x-final.md)
+   * [Announce a stable release](any-announce.md)
+   * [Patch a stable release](5.x-patch.md)
 
-> __Note__: 4.6 and 4.7 have slightly different release policies: 4.7 uses release-candidates, and 4.6 does not. This leads to slightly different steps for each.
+> __Comparison__: Each release has some policy differences, leading to
+> slight variations in the release process. Key differences:
+>
+> * 4.6 and 4.7 have slightly different release policies: 4.7 uses release-candidates, and 4.6 does not.
+> * During 2016-2017, monthly iterations produced new 4.7.x.
+> * Beginning in 2018, monthly iterations produced new 5.x.0.

doc/4.7-rc-eval.md → doc/any-rc-eval.md

-# CiviCRM v4.7.x: Evaluate a release candidate
-
-#  <span style="color:red">__WARNING__: Not updated since 5.x</span>
+# CiviCRM: Evaluate a release candidate
 
 ## Check the build