libcxl set default soname and interface version
libcxl set default soname and interface version

rather than to expect caller to define them.

Signed-off-by: Michel Normand <7b25cf65349c7c025c357f01f5a89ddd77138ac9@linux.vnet.ibm.com>

ibm-capi/libcxl,ibm-capi/libcxl