Remove path from library file definition

[liamh]

In load-blapack-libs.lisp, the definitions of the libraries should not have paths:
(defparameter *gfortran-lib* "libgfortran.so.3") (defparameter *blas-lib* "libblas.so") (defparameter *lapack-lib* "liblapack.so")
This way, CFFI will use the default system path, so for Debian and Ubuntu, where /usr/lib/x86_64-linux-gnu/libgfortran.so.3 is the path and not /usr/lib/libgfortran.so.3. Also according to akovalenko on #quicklisp, all libraries should have version numbers, otherwise it is necessary to load the -dev packages.

See http://lispcaveats.tumblr.com/post/13259176455/ffi-linking-against-shared-libraries