Use correct value for PECL DS MIN_CAPACITY constants (#5082)

* Update \Ds\Map::MIN_CAPACITY to reflect actual value

The MIN_CAPACITY was changed in PECL DS library from 16 to 8 in July 2017.
See: 9904fca6b3

* Update \Ds\Set::MIN_CAPACITY to reflect actual value 

Update \Ds\Set::MIN_CAPACITY to reflect actual value

The MIN_CAPACITY was changed in PECL DS library from 16 to 8 in July 2017.

See: php-ds/ext-ds@9904fca

* Update \Ds\Vector::MIN_CAPACITY to reflect actual value 

Update \Ds\Vector::MIN_CAPACITY to reflect actual value

The MIN_CAPACITY was changed in PECL DS library from 16 to 8 in July 2017.

See: php-ds/ext-ds@9904fca

* Add change of Vector::MIN_CAPACITY to changelog

* Add change of Set::MIN_CAPACITY to changelog

* Add change of Map::MIN_CAPACITY to changelog

reference/ds/ds.map.xml

@@ -69,7 +69,7 @@
      <modifier>const</modifier>
      <type>int</type>
      <varname linkend="ds-map.constants.min-capacity">Ds\Map::MIN_CAPACITY</varname>
-     <initializer>16</initializer>
+     <initializer>8</initializer>
     </fieldsynopsis>
 
     <classsynopsisinfo role="comment">&Methods;</classsynopsisinfo>
@@ -113,6 +113,12 @@
          The class now implements <classname>ArrayAccess</classname>.
         </entry>
        </row>
+       <row>
+        <entry>PECL ds 1.2.0</entry>
+        <entry>
+         <constant>Ds\Map::MIN_CAPACITY</constant> changed from 16 to 8.
+        </entry>
+       </row>
       </tbody>
      </tgroup>
     </informaltable>

reference/ds/ds.set.xml

@@ -82,7 +82,7 @@
      <modifier>const</modifier>
      <type>int</type>
      <varname linkend="ds-set.constants.min-capacity">Ds\Set::MIN_CAPACITY</varname>
-     <initializer>16</initializer>
+     <initializer>8</initializer>
     </fieldsynopsis>
 
     <classsynopsisinfo role="comment">&Methods;</classsynopsisinfo>
@@ -132,6 +132,12 @@
          Added the <methodname>Ds\Set::map</methodname> method.
         </entry>
        </row>
+       <row>
+        <entry>PECL ds 1.2.0</entry>
+        <entry>
+         <constant>Ds\Set::MIN_CAPACITY</constant> changed from 16 to 8.
+        </entry>
+       </row>
       </tbody>
      </tgroup>
     </informaltable>

reference/ds/ds.vector.xml

@@ -76,7 +76,7 @@
      <modifier>const</modifier>
      <type>int</type>
      <varname linkend="ds-vector.constants.min-capacity">Ds\Vector::MIN_CAPACITY</varname>
-     <initializer>10</initializer>
+     <initializer>8</initializer>
     </fieldsynopsis>
 
     <classsynopsisinfo role="comment">&Methods;</classsynopsisinfo>
@@ -122,6 +122,12 @@
          The class now implements <classname>ArrayAccess</classname>.
         </entry>
        </row>
+       <row>
+        <entry>PECL ds 1.2.0</entry>
+        <entry>
+         <constant>Ds\Vector::MIN_CAPACITY</constant> changed from 10 to 8.
+        </entry>
+       </row>
       </tbody>
      </tgroup>
     </informaltable>