scripts/addToolVersion: fix gcc complibs dependency

Since the gcc configuration changes, the way to select the
dependent companion libraries has changed.

Update the addToolVersion script to match.

Reported-by: Xun Li <lxfind@gmail.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

 reporter_name="unknown"

 reporter_url="http://iphonelinux.org/index.php/Glibc_toolchain_using_crosstool-NG"

 reporter_comment="An (experimental) toolchain targeting the Apple's iPhone."