Log Message:
Stop forcing pcsc-lite's library to be the libtool version.

opensc upstream has removed the use of ltdl.  Thus, it is not longer
reasonable to expect it to be able to dlopen a .la file.  So pass the
.so, not the .la, to configure, when using the pcsc-lite (default)
option.  Resolves a failure of pkcs15-init to load modules.