CPackIFW: Document cpack_ifw_configure_component DEPENDS option

Modules/CPackIFW.cmake

@@ -95,6 +95,7 @@
 #                       [SCRIPT <script>]
 #                       [NAME <name>]
 #                       [PRIORITY <priority>]
+#                       [DEPENDS <com_id> ...]
 #                       [LICENSES <display_name> <file_path> ...])
 #
 # This command should be called after cpack_add_component command.
@@ -109,6 +110,8 @@
 #
 # ``PRIORITY`` is priority of the component in the tree.
 #
+# ``DEPENDS`` list of dependency component identifiers in QtIFW_ style.
+#
 # ``LICENSES`` pair of <display_name> and <file_path> of license text for this
 # component. You can specify more then one license.
 #