lsb: Change link of ${baselib} to lib64 for 64bits platform
Binaries of lsb test suite need ld-linux.so* in /lib64.
for example:
Target$ ./lsbcmdchk
-sh: ./lsbcmdchk: No such file or directory
Target$ strings lsbcmdchk | grep "ld-"
/lib64/ld-lsb-x86-64.so.3
"lsbcmdchk" from lsb test suite is a binary program.
A new modification to lsb_1.4.bb caused that binaries from lsb test suite can't run.
because binaries of lsb test suite need ld-linux.so* in /lib64. But the link is changed
due to adding multilib.
I changed this link again.