ghc-bignum library

ghc-bignum is a newer package that aims to replace the legacy
integer-simple and integer-gmp packages.

* it supports several backends. In particular GMP is still supported and
  most of the code from integer-gmp has been merged in the "gmp"
  backend.

* the pure Haskell "native" backend is new and is much faster than the
  previous pure Haskell implementation provided by integer-simple

* new backends are easier to write because they only have to provide a
  few well defined functions. All the other code is common to all
  backends. In particular they all share the efficient small/big number
  distinction previously used only in integer-gmp.

* backends can all be tested against the "native" backend with a simple
  Cabal flag. Backends are only allowed to differ in performance, their
  results should be the same.

* Add `integer-gmp` compat package: provide some pattern synonyms and
  function aliases for those in `ghc-bignum`. It is intended to avoid
  breaking packages that depend on `integer-gmp` internals.

Update submodules: text, bytestring

Metric Decrease:
    Conversions
    ManyAlternatives
    ManyConstructors
    Naperian
    T10359
    T10547
    T10678
    T12150
    T12227
    T12234
    T12425
    T13035
    T13719
    T14936
    T1969
    T4801
    T4830
    T5237
    T5549
    T5837
    T8766
    T9020
    parsing001
    space_leak_001
    T16190
    haddock.base

On ARM and i386, T17499 regresses (+6% > 5%).
On x86_64 unregistered, T13701 sometimes regresses (+2.2% > 2%).

Metric Increase:
    T17499
    T13701

1 files changed, 0 insertions, 115 deletions

diff --git a/libraries/integer-gmp/configure.ac b/libraries/integer-gmp/configure.ac
deleted file mode 100644
index 1ccd48e698..0000000000
--- a/libraries/integer-gmp/configure.ac
+++ /dev/null
@@ -1,115 +0,0 @@
-AC_PREREQ(2.69)
-AC_INIT([Haskell integer (GMP)], [1.0], [libraries@haskell.org], [integer])
-
-# Safety check: Ensure that we are in the correct source directory.
-AC_CONFIG_SRCDIR([cbits/wrappers.c])
-
-AC_CANONICAL_TARGET
-
-AC_PROG_CC
-dnl make extensions visible to allow feature-tests to detect them lateron
-AC_USE_SYSTEM_EXTENSIONS
-
-
-dnl--------------------------------------------------------------------
-dnl * Deal with arguments telling us gmp is somewhere odd
-dnl--------------------------------------------------------------------
-
-AC_ARG_WITH([gmp-includes],
-  [AC_HELP_STRING([--with-gmp-includes],
-    [directory containing gmp.h])],
-    [GMP_INCLUDE_DIRS=$withval; CPPFLAGS="-I$withval"],
-    [GMP_INCLUDE_DIRS=])
-
-AC_ARG_WITH([gmp-libraries],
-  [AC_HELP_STRING([--with-gmp-libraries],
-    [directory containing gmp library])],
-    [GMP_LIB_DIRS=$withval; LDFLAGS="-L$withval"],
-    [GMP_LIB_DIRS=])
-
-AC_ARG_WITH([gmp-framework-preferred],
-  [AC_HELP_STRING([--with-gmp-framework-preferred],
-    [on OSX, prefer the GMP framework to the gmp lib])],
-    [GMP_PREFER_FRAMEWORK=YES],
-    [GMP_PREFER_FRAMEWORK=NO])
-
-AC_ARG_WITH([intree-gmp],
-  [AC_HELP_STRING([--with-intree-gmp],
-    [force using the in-tree GMP])],
-    [GMP_FORCE_INTREE=YES],
-    [GMP_FORCE_INTREE=NO])
-
-dnl--------------------------------------------------------------------
-dnl * Detect gmp
-dnl--------------------------------------------------------------------
-
-HaveLibGmp=NO
-GMP_LIBS=
-HaveFrameworkGMP=NO
-GMP_FRAMEWORK=
-HaveSecurePowm=0
-
-if test "$GMP_FORCE_INTREE" != "YES"
-then
-    if test "$GMP_PREFER_FRAMEWORK" = "YES"
-    then
-        LOOK_FOR_GMP_FRAMEWORK
-        LOOK_FOR_GMP_LIB
-    else
-        LOOK_FOR_GMP_LIB
-        LOOK_FOR_GMP_FRAMEWORK
-    fi
-fi
-
-AC_MSG_CHECKING([whether to use in-tree GMP])
-if test "$HaveFrameworkGMP" = "YES" || test "$HaveLibGmp" = "YES"
-then
-    AC_MSG_RESULT([no])
-    UseIntreeGmp=0
-    AC_CHECK_HEADER([gmp.h], , [AC_MSG_ERROR([Cannot find gmp.h])])
-
-    AC_MSG_CHECKING([GMP version])
-    AC_COMPUTE_INT(GhcGmpVerMj, __GNU_MP_VERSION, [#include <gmp.h>],
-        AC_MSG_ERROR([Unable to get value of __GNU_MP_VERSION]))
-    AC_COMPUTE_INT(GhcGmpVerMi, __GNU_MP_VERSION_MINOR, [#include <gmp.h>],
-        AC_MSG_ERROR([Unable to get value of __GNU_MP_VERSION_MINOR]))
-    AC_COMPUTE_INT(GhcGmpVerPl, __GNU_MP_VERSION_PATCHLEVEL, [#include <gmp.h>],
-        AC_MSG_ERROR([Unable to get value of __GNU_MP_VERSION_PATCHLEVEL]))
-    AC_MSG_RESULT([$GhcGmpVerMj.$GhcGmpVerMi.$GhcGmpVerPl])
-
-else
-    AC_MSG_RESULT([yes])
-    UseIntreeGmp=1
-    HaveSecurePowm=1
-
-    AC_MSG_CHECKING([GMP version])
-    GhcGmpVerMj=5
-    GhcGmpVerMi=0
-    GhcGmpVerPl=4
-    AC_MSG_RESULT([$GhcGmpVerMj.$GhcGmpVerMi.$GhcGmpVerPl])
-fi
-
-
-dnl--------------------------------------------------------------------
-dnl * Make sure we got some form of gmp
-dnl--------------------------------------------------------------------
-
-AC_SUBST(GMP_INCLUDE_DIRS)
-AC_SUBST(GMP_LIBS)
-AC_SUBST(GMP_LIB_DIRS)
-AC_SUBST(GMP_FRAMEWORK)
-AC_SUBST(HaveLibGmp)
-AC_SUBST(HaveFrameworkGMP)
-AC_SUBST(HaveSecurePowm)
-AC_SUBST(UseIntreeGmp)
-AC_SUBST(GhcGmpVerMj)
-AC_SUBST(GhcGmpVerMi)
-AC_SUBST(GhcGmpVerPl)
-
-AC_CONFIG_FILES([integer-gmp.buildinfo config.mk include/HsIntegerGmp.h])
-
-dnl--------------------------------------------------------------------
-dnl * Generate output files
-dnl--------------------------------------------------------------------
-
-AC_OUTPUT