gnu: Add OCaml. licenses: Add QPL.

* gnu/packages/ocaml.scm: New file.
* Makefile.am (MODULES): Add it.
* guix/licenses.scm: New variable.

packages: Mark the `arguments' field of <package> as thunked.

* guix/packages.scm (<package>): Mark `arguments' as thunked.
  (package-derivation): Adjust accordingly.  Parameterize
  %CURRENT-SYSTEM to SYSTEM, so that arguments can refer to it.

* guix/build-system/gnu.scm (package-with-explicit-inputs): Expect
  `package-arguments' to always return a list, and return a list.
  (package-with-extra-configure-variable): Likewise.
  (static-package): Likewise.
* gnu/packages/base.scm (patch, findutils, gcc-4.7, binutils-boot0,
  gcc-boot0, glibc-final-with-bootstrap-bash, cross-gcc-wrapper,
  static-bash-for-glibc, binutils-final, gcc-final): Change `arguments'
  from a lambda to a list, and use (%current-system) as needed.
  (nix-system->gnu-triplet, boot-triplet): Have the first argument
  default to (%current-system).
* gnu/packages/bootstrap.scm (glibc-dynamic-linker): Have `system'
  default to (%current-system).
  (%bootstrap-gcc): Change `arguments' to a list.
* gnu/packages/gawk.scm (gawk): Likewise.
* gnu/packages/m4.scm (m4): Likewise.
* gnu/packages/make-bootstrap.scm (%glibc-for-bootstrap): Likewise, and
  expect `package-arguments' to return a list.
  (%static-inputs, %gcc-static, tarball-package): Likewise.
* gnu/packages/ncurses.scm (ncurses): Likewise.

gnu: Remove unnecessary closures around `arguments' value.

* gnu/packages/algebra.scm (pari-gp): Remove closure around the value of
  `arguments'.
* gnu/packages/bdb.scm (bdb): Likewise.
* gnu/packages/mit-krb5.scm (mit-krb5): Likewise.
* gnu/packages/openssl.scm (openssl): Likewise.
* gnu/packages/perl.scm (perl): Likewise.

gnu: Add fontconfig.

* gnu/packages/freetype.scm (fontconfig): New variable.

gnu: libjpeg: Correct name of libjpeg-8 package to allow installation.

* gnu/packages/libjpeg (libjpeg-8): Switch name field to "libjpeg".

gnu: ghostscript: Build and install shared library and header files.

* gnu/packages/ghostscript (ghostscript): Extend build and install phases.

gnu: automake: Adjust test suite to lack of /bin/sh.

* gnu/packages/autotools.scm (autoconf-wrapper): New variable.
  (automake): Use AUTOCONF-WRAPPER instead of AUTOCONF.
  Add `automake-skip-amhello-tests.patch' as an input.
  Add #:patches and #:phases arguments.
* gnu/packages/patches/automake-skip-amhello-tests.patch: New file.
* Makefile.am (dist_patch_DATA): Add it.

gnu: Add Geiser.

* gnu/packages/emacs.scm (geiser): New variable.

gnu: gnutls: Remove unneeded import.

* gnu/packages/gnutls.scm: Remove import of (gnu packages base).

gnu: Add groff.

* gnu/packages/groff.scm: New file.
* Makefile.am (MODULES): Add it.

gnu: Add psutils.

* gnu/packages/ghostscript.scm (psutils): New variable.

gnu: Add netpbm.

* gnu/packages/netpbm.scm: New file.
* Makefile.am (MODULES): Add it.

gnu: Add missing libevent patch.

* gnu/packages/patches/libevent-dns-tests.patch: New file.
* Makefile.am (dist_patch_DATA): Add it.

gnu: Add Tor.

* gnu/packages/tor.scm: New file.
* Makefile.am (MODULES): Add it.

gnu: Add libevent.

* gnu/packages/libevent.scm: New file.
* Makefile.am (MODULES): Add it.

gnu: mit-krb5: Patch and enable tests.

* gnu/packages/mit-krb5.scm (mit-krb5): Enable patched tests.

gnu: screen: correct license to gpl2+

* gnu/packages/screen.scm (screen): correct license field

Add GNU Screen.

* gnu/packages/screen.scm: New file.
* Makefile.am (MODULES): Add it.

gnu: lout: Add missing dependency on Ghostscript.

* gnu/packages/lout.scm (lout): Add GHOSTSCRIPT as an input.  Use a
  mirror:// URL.

gnu: freetype: Avoid license/package name clash.

* gnu/packages/freetype.scm: Use a renamer for (guix licenses), to avoid
  a name clash.