Log Message:
Update to 2.4:

NEWS for the 2.4 release

	This is a bugfix release only. It turned out ripemd160 in the
	2.3 release was broken on all big-endian systems, due to a
	missing include of config.h. nettle-2.4 fixes this.

	The library is intended to be binary compatible with
	nettle-2.2 and nettle-2.3. The shared library names are
	libnettle.so.4.3 and libhogweed.so.2.1, with sonames still
	libnettle.so.4 and libhogweed.so.2.

NEWS for the 2.3 release

	* Support for the ripemd-160 hash function.

	* Generates and installs nettle.pc and hogweed.pc files, for
          use with pkg-config. Feedback appreciated. For projects
          using autoconf, the traditional non-pkg-config ways of
          detecting libraries, and setting LIBS and LDFLAGS, is still
          recommended.

	* Fixed a bug which made the testsuite fail in the GCM test on
	  certain platforms. Should not affect any documented features
	  of the library.

	* Reorganization of the code for the various Merkle-Damg
	  hash functions. Some fields in the context structs for md4,
	  md5 and sha1 have been renamed, for consistency.
	  Applications should not peek inside these structs, and the
	  ABI is unchanged.

	* In the manual, fixed mis-placed const in certain function
          prototypes.

	The library is intended to be binary compatible with
	nettle-2.2. The shared library names are libnettle.so.4.2 and
	libhogweed.so.2.1, with sonames still libnettle.so.4 and
	libhogweed.so.2.