Document regex support in include/exclude patterns (#1243)

* Document that include/exclude can be regex - assembly

* Document that include/exclude can be regex - assembly-component

* Document that include/exclude can be regex - advanced-descriptor-topics

Author: VirtualTim

src/main/mdo/assembly-component.mdo

@@ -173,7 +173,9 @@
             <![CDATA[
             When &lt;include&gt; subelements are present, they define a set of
             files and directory to include. If none is present, then
-            &lt;includes&gt; represents all valid values.
+            &lt;includes&gt; represents all valid values. Note that this pattern
+            can be in the from of a regular expression by using the %regex[...]
+            syntax.
             ]]>
           </description>
         </field>
@@ -188,7 +190,9 @@
             <![CDATA[
             When &lt;exclude&gt; subelements are present, they define a set of
             files and directory to exclude. If none is present, then
-            &lt;excludes&gt; represents no exclusions.
+            &lt;excludes&gt; represents no exclusions. Note that this pattern
+            can be in the from of a regular expression by using the %regex[...]
+            syntax.
             ]]>
           </description>
         </field>

src/main/mdo/assembly.mdo

@@ -293,7 +293,9 @@
             <![CDATA[
             When &lt;include&gt; subelements are present, they define a set of
             files and directory to include. If none is present, then
-            &lt;includes&gt; represents all valid values.
+            &lt;includes&gt; represents all valid values. Note that this pattern
+            can be in the from of a regular expression by using the %regex[...]
+            syntax.
             ]]>
           </description>
         </field>
@@ -308,7 +310,9 @@
             <![CDATA[
             When &lt;exclude&gt; subelements are present, they define a set of
             files and directory to exclude. If none is present, then
-            &lt;excludes&gt; represents no exclusions.
+            &lt;excludes&gt; represents no exclusions. Note that this pattern
+            can be in the from of a regular expression by using the %regex[...]
+            syntax.
             ]]>
           </description>
         </field>

src/site/apt/advanced-descriptor-topics.apt.vm

@@ -214,6 +214,8 @@ Advanced Assembly-Descriptor Topics
   of <<<fileSet>>> patterns, including the option to change the default pattern syntax
   someday.
 
+  <Note:> The same syntax is also supported for include patterns.
+
 ** Example: Including directories named <<<target>>> in the <<<src>>> directory
 
   In this example, we want to produce a buildable source distribution of a