This patch contains two fixes:
* if the user wants to install the SDK in a directory that already
contains a SDK for the same architecture, a warning will be shown;
* when the symbolic links are relocated use -n option. Otherwise,
symbolic links to existing directories will be created in the
directory itself;
[YOCTO #3401]
Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>