Update to version 2.5, released six days ago. Previous version was eight
years old. Update WRKSRC, MASTER_SITES, PKGNAME. Set LICENSE. We need LLGPL
in licenses/ at some point. From NEWS (see Changelog for details):

* 2.5 (April 2014)

** Backend improvements

*** Clozure CL

**** `slime-set-default-directory' now calls chdir
This propagates its effects to subprocesses.

*** Allegro CL

**** swank-compile-string no longer binds *default-pathname-defaults*
This was inconsistent with the behaviour of other backends and caused
strange issues with SYS:TEMPORARY-DIRECTORY.

**** Improved source file recording
Whenever possible interactive definition compilation is mapped to the
actual source file rather than the buffer name to avoid breakage when
the the buffer name changes or is closed.

** SLIME Trace Dialog

*** (Un)Tracing a definition automatically updates the trace status

** slime-repl

*** Inspecting * in REPL no longer inspects ** (issue #137)

** slime-autodoc

*** Multiline arglists in `slime-autodoc' no longer imply a newline (issue #7)

** Core Bugfixes

*** SWANK port file name defined in more portable fashion
Bug reported by Mirko Vukovic on slime-devel.

*** inferior-lisp-program can now hold paths with spaces (issue #116)

* 2.4 (March 2014)

** New contrib SLIME Trace Dialog included in `slime-fancy'
Interactive interface to tracing functions and methods. See manual for
details.

** New contrib `slime-fancy-trace', included in `slime-fancy'
If your implementation allows it, trace complex method signatures,
labels, etc...

** New options in `slime-cl-indent.el' used by the `slime-indentation' contrib
New variables are `lisp-loop-body-forms-indentation' and
`lisp-loop-body-forms-indentation'.

** New command `sldb-copy-down-to-repl' bound to M-RET in debugger
Copies the frame variable under point to the REPL, much as
`slime-inspector-copy-down-to-repl' does.

** New command `slime-delete-package'

** UTF8 encoding
SLIME now uses only UTF8 to encode strings on the wire.  Customization
variables like `slime-net-coding-system' or `swank:*coding-system*' are
now useless.

** Setup recipe
In preparation for a more decentralized approach to SLIME contribs,
the setup recipe has been slightly changed, hopefully in a backwards
compatible way. Calling `slime-setup' is no longer required. Instead,
the `slime-contribs' variable can be customized with a list of
contribs to be loaded when `M-x slime' is first executed. See section
`8.1 Loading Contrib Packages' of the SLIME Manual for more details.

** Bugfixes and stability improvements since the move to Github

*** Issue #9: new REPL output respectes existing REPL results or presentations.

*** Issue #17: TAB no longer freezes the REPL in "read-mode"

*** Issue #42: compiles on Emacs 24

*** Issue #43: `just-one-space' no longer breaks REPL

*** Issue #34: "Error in timer" error when starting slime on emacs24

*** Printing conditions is now a bit safer in the debugger (git:bafeb86)

*** Fix undo behavior in the REPL (git:af354d7)
Previously, undo would obliterate previous prompts.

*** Fix REPL type-ahead behaviour when presentations active (git:38a1826)
Input typed before your lisp responds is appended to the result when it arrives.

*** Fix package and dir synch when no process buffer (git:dc88935)
Sometimes process buffer has been killed, but connection is still active.

*** M-p on any part of the REPL buffer no longer errors (git:dc88935)

*** slime-presentations can be enabled in inspector (git:647c3c3, 2f57b34)
Set `slime-inspector-insert-ispec-function' to
`slime-presentation-inspector-insert-ispec' to use them.

*** M-. on a presentation on the REPL now longer errors
This happened when `slime-presentations' was enabled, either by itself
or by `slime-fancy'.

*** M-. on the first position of a *slime-apropos* buffer no longer fails.
This happened with the `slime-fancy-inspector.el' contrib.

*** RET on no part in *inspector* buffer no longer errors

*** slime-repsentations properly recognized when at very beginning of buffer
Fix by Attila Lendvai

*** Avoid loading `swank-asdf.lisp' if there's a good chance it will break SWANK
`swank-asdf.lisp' aborts the connection if it finds an old ASDF version.

*** In ABCL, `slime-describe-function' now works for both macros and functions.

** SLIME builds on Travis CI
See https://travis-ci.org/slime/slime for the build status and history.

** Testing framework refactored to use ERT
`def-slime-test' creates regular ERT tests. `define-slime-ert-test' is
a lighter convenience macro which automatically sets some tags for the
new tests.

** Top-level Makefile
For hackers or users using the latest version, there is now a
top-level Makefile. Use "make help" to learn about targets.

** Moved to Github
SLIME now lives in Github. The documentation and the README.md file
were updated. HACKING was renamed to CONTRIBUTING.md and updated with
Github specific instructions.

** Bugfixes and stability improvements
Since the last release and before move to Github, many bugfixes and
other changes were commited, too many to list here. See Changelog for
details.

* 2.3 (October 2011)

** REPL no longer loaded by default
SLIME has a REPL which communicates exclusively over SLIME's socket.
This REPL is no longer loaded by default.  The default REPL is now the
one by the Lisp implementation in the *inferior-lisp* buffer.  The
simplest way to enable the old REPL is:

  (slime-setup '(slime-repl))

** Precise source tracking in Clozure CL
Recent versions of the CCL compiler support source-location tracking.
This makes the sldb-show-source command much more useful and M-. works
better too.

** Environment variables for Lisp process
slime-lisp-implementations can be used to specify a list of strings to
augment the process environment of the Lisp process.  E.g.:

    (sbcl-cvs
     ("/home/me/sbcl-cvs/src/runtime/sbcl"
      "--core" "/home/me/sbcl-cvs/output/sbcl.core")
     :env ("SBCL_HOME=/home/me/sbcl-cvs/contrib/"))

* 2.1

** Removed Features
Some of the more esoteric features, like presentations or fuzzy
completion, are no longer enabled by default.  A new directory
"contrib/" contains the code for these packages.  To use them, you
must make some changes to your ~/.emacs.  For details see, section
"Contributed Packages" in the manual.

** Stepper
Juho Snellman implemented stepping commands for SBCL.

** Completions
SLIME can now complete keywords and character names (like #\newline).