[PATCH] Fix RTL archive file load

[Chris Johns]

On 14/07/2014 11:23 pm, Peng Fan wrote:
>
> When the first time executing such a command "dlo libxx.ra:yy.rap" or
> "dlo libxx.a:yy.o", RTL complains "no format loader found". when
> executing the command the second time, the archive files can be loaded
> correctly. It is because cache flush uses `file_size = -1` while
> file_size is unsigned type , and  `rtems_rtl_obj_cache_read` should
> include a if condition because A cache obj can cache different files but
> it can only cache one file  once.  Hope this explaination is clear:)
> Details is in the patch.

Applied. Thanks.

Chris