Update build system and packaging

Minimal changes required to integrate the SPL sources in to the
ZFS repository build infrastructure and packaging.

Build system and packaging:
  * Renamed SPL_* autoconf m4 macros to ZFS_*.
  * Removed redundant SPL_* autoconf m4 macros.
  * Updated the RPM spec files to remove SPL package dependency.
  * The zfs package obsoletes the spl package, and the zfs-kmod
    package obsoletes the spl-kmod package.
  * The zfs-kmod-devel* packages were updated to add compatibility
    symlinks under /usr/src/spl-x.y.z until all dependent packages
    can be updated.  They will be removed in a future release.
  * Updated copy-builtin script for in-kernel builds.
  * Updated DKMS package to include the spl.ko.
  * Updated stale AUTHORS file to include all contributors.
  * Updated stale COPYRIGHT and included the SPL as an exception.
  * Renamed README.markdown to README.md
  * Renamed OPENSOLARIS.LICENSE to LICENSE.
  * Renamed DISCLAIMER to NOTICE.

Required code changes:
  * Removed redundant HAVE_SPL macro.
  * Removed _BOOT from nvpairs since it doesn't apply for Linux.
  * Initial header cleanup (removal of empty headers, refactoring).
  * Remove SPL repository clone/build from zimport.sh.
  * Use of DEFINE_RATELIMIT_STATE and DEFINE_SPINLOCK removed due
    to build issues when forcing C99 compilation.
  * Replaced legacy ACCESS_ONCE with READ_ONCE.
  * Include needed headers for `current` and `EXPORT_SYMBOL`.

Reviewed-by: Tony Hutter <[email protected]>
Reviewed-by: Olaf Faaland <[email protected]>
Reviewed-by: Matthew Ahrens <[email protected]>
Reviewed-by: Pavel Zakharov <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
TEST_ZIMPORT_SKIP="yes"
Closes #7556

1 files changed, 2 insertions, 2 deletions

diff --git a/config/kernel-group-info.m4 b/config/kernel-group-info.m4
index 4db2bba5c..849a1e246 100644
--- a/config/kernel-group-info.m4
+++ b/config/kernel-group-info.m4
@@ -2,11 +2,11 @@ dnl #
 dnl # 4.9 API change
 dnl # group_info changed from 2d array via >blocks to 1d array via ->gid
 dnl #
-AC_DEFUN([SPL_AC_GROUP_INFO_GID], [
+AC_DEFUN([ZFS_AC_KERNEL_GROUP_INFO_GID], [
 	AC_MSG_CHECKING([whether group_info->gid exists])
 	tmp_flags="$EXTRA_KCFLAGS"
 	EXTRA_KCFLAGS="-Werror"
-	SPL_LINUX_TRY_COMPILE([
+	ZFS_LINUX_TRY_COMPILE([
 		#include <linux/cred.h>
 	],[
 		struct group_info *gi = groups_alloc(1);