Updated po/squirrelmail.po file with strings in abook_take.

Updated po/xgetpo to search for strings in plugins/abook_take.

po/xgetpo

@@ -43,5 +43,7 @@ xgettext --keyword=_ -keyword=N_  --default-domain=squirrelmail -j \
 #    -C squirrelmail/plugins/spamcop/*.php --output-dir=squirrelmail/po/
 xgettext --keyword=_ -keyword=N_  --default-domain=squirrelmail -j \
     -C squirrelmail/po/independent_strings.txt --output-dir=squirrelmail/po/
+xgettext --keyword=_ -keyword=N_  --default-domain=squirrelmail -j \
+    -C squirrelmail/plugins/abook_take/*.php --output-dir=squirrelmail/po/
 
 cd squirrelmail/po