ref-manual: Added GLIBC_GENERATE_LOCALES variable.

Fixes [YOCTO #6629]

Added a new variable description to the glossary and also updated
the IMAGE_LINGUAS entry to have a back-reference to the new
variable.

Reported-by: Laszlo Papp <lpapp@kde.org>
(From yocto-docs rev: 219097735c57a3dc10195511dd5b199e73b8a094)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/ref-manual/ref-variables.xml

@@ -22,7 +22,7 @@
        <link linkend='var-D'>D</link>
        <link linkend='var-ENABLE_BINARY_LOCALE_GENERATION'>E</link>
        <link linkend='var-FEATURE_PACKAGES'>F</link>
-       <link linkend='var-GROUPADD_PARAM'>G</link>
+       <link linkend='var-GLIBC_GENERATE_LOCALES'>G</link>
        <link linkend='var-HOMEPAGE'>H</link>
        <link linkend='var-ICECC_DISABLED'>I</link>
 <!--               <link linkend='var-glossary-j'>J</link> -->
@@ -2879,6 +2879,28 @@
 
     <glossdiv id='var-glossary-g'><title>G</title>
 
+        <glossentry id='var-GLIBC_GENERATE_LOCALES'><glossterm>GLIBC_GENERATE_LOCALES</glossterm>
+            <glossdef>
+                <para>
+                    Specifies the list of GLIBC locales to generate should you
+                    not wish generate all LIBC locals, which can be time
+                    consuming.
+                    <note>
+                        If you specifically remove the locale
+                        <filename>en_US.UTF-8</filename>, you must set
+                        <link linkend='var-IMAGE_LINGUAS'><filename>IMAGE_LINGUAS</filename></link>
+                        appropriately.
+                    </note>
+                    You can set <filename>GLIBC_GENERATE_LOCALES</filename>
+                    in your <filename>local.conf</filename> file.
+                    By default, all locales are generated.
+                    <literallayout class='monospaced'>
+      GLIBC_GENERATE_LOCALES = "en_GB.UTF-8 en_US.UTF-8"
+                    </literallayout>
+                </para>
+            </glossdef>
+        </glossentry>
+
         <glossentry id='var-GROUPADD_PARAM'><glossterm>GROUPADD_PARAM</glossterm>
             <glossdef>
                 <para>
@@ -3460,6 +3482,12 @@
                     packages only provide locale files by language and not by
                     country-specific language).
                 </para>
+
+                <para>
+                    See the
+                    <link linkend='var-GLIBC_GENERATE_LOCALES'><filename>GLIBC_GENERATE_LOCALES</filename></link>
+                    variable for information on generating GLIBC locales.
+                </para>
             </glossdef>
         </glossentry>