Log message:
Update to Clojure 1.5.1

Changes to Clojure in Version 1.5.1

* fix for leak caused by ddc65a96fdb1163b

Changes to Clojure in Version 1.5

 1 Deprecated and Removed Features
    1.1 Clojure 1.5 reducers library requires Java 6 or later
 2 New and Improved Features
    2.1 Reducers
    2.2 Reader Literals improved
    2.3 clojure.core/set-agent-send-executor!, set-agent-send-off-executor!,
        and send-via
    2.4 New threading macros
    2.5 Column metadata captured by reader
    2.6 gen-class improvements
    2.7 Support added for marker protocols
    2.8 clojure.pprint/print-table output compatible with Emacs Org mode
    2.9 clojure.string/replace and replace-first handle special characters
        more predictably
    2.10 Set and map constructor functions allow duplicates
    2.11 More functions preserve metadata
    2.12 New edn reader, improvements to *read-eval*
 3 Performance Enhancements
 4 Improved error messages
 5 Improved documentation strings
 6 Bug Fixes
 7 Binary Compatibility Notes

Log message:
Drop superfluous PKG_DESTDIR_SUPPORT, "user-destdir" is default these days.

Log message:
Import clojure-1.4.0 as lang/clojure.

Clojure is a dynamic programming language that targets the Java
Virtual Machine (and the CLR, and JavaScript). It is designed to
be a general-purpose language, combining the approachability and
interactive development of a scripting language with an efficient
and robust infrastructure for multithreaded programming. Clojure
is a compiled language - it compiles directly to JVM bytecode, yet
remains completely dynamic. Every feature supported by Clojure is
supported at runtime. Clojure provides easy access to the Java
frameworks, with optional type hints and type inference, to ensure
that calls to Java can avoid reflection.

Clojure is a dialect of Lisp, and shares with Lisp the code-as-data
philosophy and a powerful macro system. Clojure is predominantly
a functional programming language, and features a rich set of
immutable, persistent data structures. When mutable state is needed,
Clojure offers a software transactional memory system and reactive
Agent system that ensure clean, correct, multithreaded designs.

I hope you find Clojure's combination of facilities elegant,
powerful, practical and fun to use.