internals: fix stripping canadians

We can't run the newly built gcc when it is a canadian cross.
Thus, we can't get the version number, and thus we can't get
the directory libexec subdirectory to strip.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

 reporter_name="dsreed on freenode/#crosstool-ng"

 reporter_url=""

 reporter_comment="Enables experimental support for VFP/NEON hardware floating point."