Added support for --large-alignment in ld65.

Implemented the same way as in ca65.

doc/ld65.sgml

@@ -79,6 +79,7 @@ Long options:
   --end-group                   End a library group
   --force-import sym            Force an import of symbol 'sym'
   --help                        Help (this text)
+  --large-alignment             Don't warn about large alignments
   --lib file                    Link this library
   --lib-path path               Specify a library search path
   --mapfile name                Create a map file
@@ -298,6 +299,12 @@ Here is a description of all of the command-line options:
   information generation is currently being developed, so the format of the
   file and its contents are subject to change without further notice.
 
+  <label id="option--large-alignment">
+  <tag><tt>--large-alignment</tt></tag>
+
+  Disable warnings about a large combined alignment. See the discussion of the
+  <tt><ref id=".ALIGN" name=".ALIGN"></tt> directive for futher information.
+
 
   <tag><tt>--lib file</tt></tag>