Move pre-requisites to a separate file

doc/4.6-final.md

 # CiviCRM v4.6.x: Publish a final release
 
-## Pre-requisites
+## Prerequisites
 
- * Installed+configured [Google Cloud SDK](https://cloud.google.com/sdk/downloads). (Run `gcloud init`, `gcloud auth activate-service-account --key-file ...`, or similar.)
- * Write access to all main CiviCRM GitHub repos (`civicrm-{core,packages,backdrop,drupal,joomla,wordpress}`)
- * Write access to Google Cloud Storage (`civicrm` and `civicrm-build` buckets)
- * Write access to SourceForge account (`civicrm`)
- * Import the CiviCRM GPG keypair (`7A1E75CB`)
- * Local copy of [buildkit](https://github.com/civicrm/civicrm-buildkit/)
- * Local clones of all main CiviCRM git repos (e.g. `mkdir src; cd src; gitify all --skip-gencode` or `cividist create dist`)
-
-The user `releaser` on `latest.civicrm.org` has a suitable configuration in `~/src/4.6`.
-To start a session, login to that account and run:
-
-```
-eval "$(ssh-agent -s)"
-ssh-add ~/.ssh/id_rsa
-```
+See [Prerequisites](any-prereq.md)
 
 ## 1: Sanity checks
 

doc/4.7-final.md

@@ -2,23 +2,10 @@
 
 #  <span style="color:red">__WARNING__: Not updated since 5.x</span>
 
-## Pre-requisites
 
- * Installed+configured [Google Cloud SDK](https://cloud.google.com/sdk/downloads). (Run `gcloud init`, `gcloud auth activate-service-account --key-file ...`, or similar.)
- * Write access to all main CiviCRM GitHub repos (`civicrm-{core,packages,backdrop,drupal,joomla,wordpress}`)
- * Write access to Google Cloud Storage (`civicrm` and `civicrm-build` buckets)
- * Write access to SourceForge account (`civicrm`)
- * Import the CiviCRM GPG keypair (`7A1E75CB`)
- * Local copy of [buildkit](https://github.com/civicrm/civicrm-buildkit/)
- * Local clones of all main CiviCRM git repos (e.g. `mkdir src; cd src; gitify all --skip-gencode` or `cividist create dist`)
+## Prerequisites
 
-The user `releaser` on `latest.civicrm.org` has a suitable configuration in `~/src/4.7`.
-To start a session, login to that account and run:
-
-```
-eval "$(ssh-agent -s)"
-ssh-add ~/.ssh/id_rsa
-```
+See [Prerequisites](any-prereq.md)
 
 ## 1: Sanity checks
 

doc/4.7-rc.md

@@ -2,18 +2,10 @@
 
 #  <span style="color:red">__WARNING__: Not updated since 5.x</span>
 
-## Pre-requisites
 
- * Write access to all main CiviCRM git repos (civicrm-{core,packages,backdrop,drupal,joomla,wordpress})
- * Access to CiviCRM Jenkins (https://test.civicrm.org)
+## Prerequisites
 
-The user `releaser` on `latest.civicrm.org` has a suitable configuration in `~/src/4.7`.
-To start a session, login to that account and run:
-
-```
-eval "$(ssh-agent -s)"
-ssh-add ~/.ssh/id_rsa
-```
+See [Prerequisites](any-prereq.md)
 
 ## 1: Sanity checks
 

doc/5.x-rc.md

 # CiviCRM v5.x.0: Publish a release candidate
 
-## Pre-requisites
+## Prerequisites
 
- * Write access to all main CiviCRM git repos (civicrm-{core,packages,backdrop,drupal,joomla,wordpress})
- * Access to CiviCRM Jenkins (https://test.civicrm.org)
-
-The user `releaser` on `latest.civicrm.org` has a suitable configuration in `~/src/master`.
-To start a session, login to that account and run:
-
-```
-eval "$(ssh-agent -s)"
-ssh-add ~/.ssh/id_rsa
-```
+See [Prerequisites](any-prereq.md)
 
 ## 1: Sanity checks
 

doc/README.md

 ## CiviCRM Release Mechanics
 
+ * [Prerequisites](any-prereq.md)
  * CiviCRM v4.6.x
    * [Publish a final release](4.6-final.md)
    * [Announce a final release](any-announce.md)

doc/any-prereq.md

+# CiviCRM (Any Version): Prerequisites
+
+## Pre-requisites
+
+ * Installed+configured [Google Cloud SDK](https://cloud.google.com/sdk/downloads). (Run `gcloud init`, `gcloud auth activate-service-account --key-file ...`, or similar.)
+ * Write access to all main CiviCRM GitHub repos (`civicrm-{core,packages,backdrop,drupal,joomla,wordpress}`)
+ * Write access to Google Cloud Storage (`civicrm` and `civicrm-build` buckets)
+ * Write access to SourceForge account (`civicrm`)
+ * Access to CiviCRM Jenkins (https://test.civicrm.org)
+ * Import the CiviCRM GPG keypair (`7A1E75CB`)
+ * Local copy of [buildkit](https://github.com/civicrm/civicrm-buildkit/)
+ * Local clones of all main CiviCRM git repos (e.g. `mkdir src; cd src; gitify all --skip-gencode` or `cividist create dist`)
+
+The user `releaser` on `latest.civicrm.org` has a suitable configuration in `~/src/4.6`, `~/src/4.7`, and `~/src/master`.
+To start a session, login to that account and run:
+
+```
+eval "$(ssh-agent -s)"
+ssh-add ~/.ssh/id_rsa
+```