add more instruction on building s4

[Matthias Dieter Wallnöfer]

Yeah, okay the content is acceptable I think (hope also for all others - 
if not please complain).

One issue left: in the text there are some typos: would you like to fix 
them or should I try to do that?

Matthias

Matthieu Patou wrote:
> Hi Matthias,
>
> So I reworded the quick howto because I _really_ think that these 
> instruction are useful and can help s4 beginners to go further when 
> they face a compilation error that is due to subtle changes in the 
> pidl that are not catched up correctly by our current build system.
>
> Matthieu
> On 24/03/2010 19:54, Matthias Dieter Wallnöfer wrote:
>> Hi Matthieu!
>>
>> + "./autogen.sh": This script is already described a few lines 
>> earlier (in the sense as "if you don't use a packaged version you 
>> first need to...")
>>
>> + "make idl_full": You don't really need to use this - it works also 
>> without in most cases ("make" should recompile the IDLs when needed). 
>> Only under special circumstances (major IDL changes) this could be 
>> useful - but then it isn't said that the normal build works - so you 
>> probably anyway need the full rebuild.
>>
>> So I think this patch isn't really needed.
>>
>> Matthias
>>
>> Matthieu Patou wrote:
>>> See the patch.
>>>
>>> Matthieu.
>>
>