Generalize references to PHP 5.x Debian/Ubuntu packages

Summary:
Both Debian and Ubuntu have been shipping PHP 7.x (or now 8.x) for a while.
This patch replaces the versioned php5-foo package references with more general
php-foo package names.

Test Plan: Navigated to the documentation pages that this patch updates.

Reviewers: O1 Blessed Committers, valerio.bozzolan

Reviewed By: O1 Blessed Committers, valerio.bozzolan

Subscribers: speck, tobiaswiese, valerio.bozzolan, Matthew, Cigaryno

Differential Revision: https://we.phorge.it/D25315

src/applications/auth/provider/PhabricatorLDAPAuthProvider.php

@@ -264,7 +264,7 @@ final class PhabricatorLDAPAuthProvider extends PhabricatorAuthProvider {
           'talk to LDAP. Usually you can install it with '.
           '`%s`, `%s`, or a similar package manager command.',
           'yum install php-ldap',
-          'apt-get install php5-ldap'));
+          'apt-get install php-ldap'));
     }
   }
 

src/applications/config/check/PhabricatorPHPConfigSetupCheck.php

@@ -83,7 +83,7 @@ final class PhabricatorPHPConfigSetupCheck extends PhabricatorSetupCheck {
 
         // NOTE: We're intentionally telling you to install "mysqlnd" here; on
         // Ubuntu, there's no separate "mysqli" package.
-        phutil_tag('tt', array(), 'sudo apt-get install php5-mysqlnd'));
+        phutil_tag('tt', array(), 'sudo apt-get install php-mysqlnd'));
 
       $this->newIssue('php.mysqli')
         ->setName(pht('MySQLi Extension Not Available'))
@@ -103,7 +103,7 @@ final class PhabricatorPHPConfigSetupCheck extends PhabricatorSetupCheck {
         'native driver is recommended.'.
         "\n\n".
         'You may be able to install the native driver with a command like: %s',
-        phutil_tag('tt', array(), 'sudo apt-get install php5-mysqlnd'));
+        phutil_tag('tt', array(), 'sudo apt-get install php-mysqlnd'));
 
 
       $this->newIssue('php.myqlnd')

src/docs/user/configuration/configuration_guide.diviner

@@ -139,7 +139,7 @@ server.modules list:
 
 Finally, you should run the following commands to enable php support:
 
-  $ sudo apt-get install php5-cgi  # for Ubuntu; other distros should be similar
+  $ sudo apt-get install php-cgi  # for Ubuntu; other distros should be similar
   $ sudo lighty-enable-mod fastcgi-php
 
 Restart lighttpd after making your edits, then continue below.

src/docs/user/field/restarting.diviner

@@ -112,5 +112,5 @@ like one of these on your system, or a different command:
 
 ```
 $ sudo /etc/init.d/php-fpm restart
-$ sudo service php5-fpm reload
+$ sudo service php-fpm reload
 ```

src/docs/user/installation_guide.diviner

@@ -123,7 +123,7 @@ Here's a general description of what you need to install:
   - MySQL Server (usually "mysqld" or "mysql-server" or "mariadb-server")
   - PHP (usually "php")
   - Required PHP extensions: mbstring, iconv, mysql (or mysqli), curl, pcntl
-    (these might be something like "php-mysql" or "php5-mysqlnd")
+    (these might be something like "php-mysql" or "php-mysqlnd")
   - Optional PHP extensions: gd, zip
 
 If you already have LAMP setup, you've probably already got everything you need.