Add build system

Add autoconf style build infrastructure to the ZFS tree.  This
includes autogen.sh, configure.ac, m4 macros, some scripts/*,
and makefiles for all the core ZFS components.

module/Makefile.in

@@ -0,0 +1,54 @@
+subdir-m += avl
+subdir-m += nvpair
+subdir-m += unicode
+subdir-m += zcommon
+subdir-m += zfs
+
+modules:
+	# Make the exported SPL symbols available to these modules.
+	cp @SPL_OBJ@/@SPL_SYMBOLS@ .
+	$(MAKE) -C @LINUX_OBJ@ SUBDIRS=`pwd` @KERNELMAKE_PARAMS@ $@
+
+clean:
+	$(MAKE) -C @LINUX_OBJ@ SUBDIRS=`pwd` @KERNELMAKE_PARAMS@ $@
+	if [ -f @SPL_SYMBOLS@ ]; then $(RM) @SPL_SYMBOLS@; fi
+	if [ -f @LINUX_SYMBOLS@ ]; then $(RM) @LINUX_SYMBOLS@; fi
+	if [ -f Module.markers ]; then $(RM) Module.markers; fi
+
+modules_install:
+	# Install the kernel modules
+	$(MAKE) -C @LINUX_OBJ@ SUBDIRS=`pwd` \
+		INSTALL_MOD_PATH=$(DESTDIR) \
+		INSTALL_MOD_DIR=addon/zfs $@
+	find ${DESTDIR}/lib/modules/ -name 'modules.*' | xargs ${RM}
+	sysmap=${DESTDIR}/boot/System.map-@LINUX_VERSION@; \
+	if [ -f $$sysmap ]; then \
+		depmod -ae -F $$sysmap @LINUX_VERSION@; \
+	fi
+	# Install the required headers in to the kernel source
+	destname=zfs-@ZFS_META_VERSION@/@LINUX_VERSION@; \
+	instdest=$(DESTDIR)/usr/src/$$destname; \
+	(find . -mindepth 3 -name '*.h' | xargs -Ihdr sh -c \
+	 "DEST=hdr && install -D hdr $$instdest/\$${DEST#*/*/*/}") || exit 1
+
+modules_uninstall:
+	# Uninstall the kernel modules
+	$(RM) -R ${DESTDIR}/lib/modules/@LINUX_VERSION@/addon/zfs
+	# Uninstall the required headers from the kernel source
+	destname=zfs-@ZFS_META_VERSION@/@LINUX_VERSION@; \
+	instdest=$(DESTDIR)/usr/src/$$destname; \
+	$(RM) -R $$instdest
+
+distdir:
+	distfiles=`find . -name '*.c' -o -name '*.h'`; \
+	for distfile in $$distfiles; do \
+		distpath=`dirname $$distdir/$$distfile`; \
+		(/bin/mkdir -p $$distpath && \
+		 /bin/cp $$distfile $$distdir/$$distfile) || exit 1; \
+	done
+
+distclean maintainer-clean: clean
+install: modules_install
+uninstall: modules_uninstall
+all: modules
+check:

module/avl/Makefile.in

@@ -0,0 +1,8 @@
+MODULE := zavl
+
+EXTRA_CFLAGS  = -I@MODDIR@/avl/include
+EXTRA_CFLAGS += @KERNELCPPFLAGS@
+
+obj-m := ${MODULE}.o
+
+${MODULE}-objs += avl.o

module/nvpair/Makefile.in

@@ -0,0 +1,10 @@
+MODULE := znvpair
+
+EXTRA_CFLAGS  = -I@MODDIR@/nvpair/include
+EXTRA_CFLAGS += @KERNELCPPFLAGS@
+
+obj-m := ${MODULE}.o
+
+${MODULE}-objs += nvpair.o
+${MODULE}-objs += nvpair_alloc_spl.o
+${MODULE}-objs += nvpair_alloc_fixed.o

module/unicode/Makefile.in

@@ -0,0 +1,9 @@
+MODULE := zunicode
+
+EXTRA_CFLAGS  = -I@MODDIR@/unicode/include
+EXTRA_CFLAGS += @KERNELCPPFLAGS@
+
+obj-m := ${MODULE}.o
+
+${MODULE}-objs += u8_textprep.o
+${MODULE}-objs += uconv.o

module/zcommon/Makefile.in

@@ -0,0 +1,18 @@
+MODULE := zcommon
+
+EXTRA_CFLAGS  = -I@MODDIR@/avl/include
+EXTRA_CFLAGS += -I@MODDIR@/nvpair/include
+EXTRA_CFLAGS += -I@MODDIR@/unicode/include
+EXTRA_CFLAGS += -I@MODDIR@/zcommon/include
+EXTRA_CFLAGS += -I@MODDIR@/zfs/include
+EXTRA_CFLAGS += @KERNELCPPFLAGS@
+
+obj-m := ${MODULE}.o
+
+${MODULE}-objs += zfs_deleg.o
+${MODULE}-objs += zfs_prop.o
+${MODULE}-objs += zprop_common.o
+${MODULE}-objs += zfs_namecheck.o
+${MODULE}-objs += zfs_comutil.o
+${MODULE}-objs += zfs_fletcher.o
+${MODULE}-objs += zpool_prop.o

module/zfs/Makefile.in

@@ -0,0 +1,89 @@
+MODULE := zfs
+
+EXTRA_CFLAGS  = -I@MODDIR@/zfs/include
+EXTRA_CFLAGS += -I@MODDIR@/zcommon/include
+EXTRA_CFLAGS += -I@MODDIR@/avl/include
+EXTRA_CFLAGS += -I@MODDIR@/nvpair/include
+EXTRA_CFLAGS += -I@MODDIR@/unicode/include
+EXTRA_CFLAGS += @KERNELCPPFLAGS@
+
+obj-m := ${MODULE}.o
+
+${MODULE}-objs += arc.o
+${MODULE}-objs += bplist.o
+${MODULE}-objs += bpobj.o
+${MODULE}-objs += dbuf.o
+${MODULE}-objs += ddt.o
+${MODULE}-objs += ddt_zap.o
+${MODULE}-objs += dmu.o
+${MODULE}-objs += dmu_diff.o
+${MODULE}-objs += dmu_object.o
+${MODULE}-objs += dmu_objset.o
+${MODULE}-objs += dmu_send.o
+${MODULE}-objs += dmu_traverse.o
+${MODULE}-objs += dmu_tx.o
+${MODULE}-objs += dmu_zfetch.o
+${MODULE}-objs += dnode.o
+${MODULE}-objs += dnode_sync.o
+${MODULE}-objs += dsl_dataset.o
+${MODULE}-objs += dsl_deadlist.o
+${MODULE}-objs += dsl_deleg.o
+${MODULE}-objs += dsl_dir.o
+${MODULE}-objs += dsl_pool.o
+${MODULE}-objs += dsl_prop.o
+${MODULE}-objs += dsl_scan.o
+${MODULE}-objs += dsl_synctask.o
+${MODULE}-objs += fm.o
+${MODULE}-objs += gzip.o
+${MODULE}-objs += lzjb.o
+${MODULE}-objs += metaslab.o
+${MODULE}-objs += refcount.o
+${MODULE}-objs += rrwlock.o
+${MODULE}-objs += sa.o
+${MODULE}-objs += sha256.o
+${MODULE}-objs += spa.o
+${MODULE}-objs += spa_boot.o
+${MODULE}-objs += spa_config.o
+${MODULE}-objs += spa_errlog.o
+${MODULE}-objs += spa_history.o
+${MODULE}-objs += spa_misc.o
+${MODULE}-objs += space_map.o
+${MODULE}-objs += txg.o
+${MODULE}-objs += uberblock.o
+${MODULE}-objs += unique.o
+${MODULE}-objs += vdev.o
+${MODULE}-objs += vdev_cache.o
+${MODULE}-objs += vdev_file.o
+${MODULE}-objs += vdev_label.o
+${MODULE}-objs += vdev_mirror.o
+${MODULE}-objs += vdev_missing.o
+${MODULE}-objs += vdev_queue.o
+${MODULE}-objs += vdev_raidz.o
+${MODULE}-objs += vdev_root.o
+${MODULE}-objs += zap.o
+${MODULE}-objs += zap_leaf.o
+${MODULE}-objs += zap_micro.o
+${MODULE}-objs += zfs_acl.o
+${MODULE}-objs += zfs_byteswap.o
+${MODULE}-objs += zfs_ctldir.o
+${MODULE}-objs += zfs_debug.o
+${MODULE}-objs += zfs_dir.o
+${MODULE}-objs += zfs_fm.o
+${MODULE}-objs += zfs_fuid.o
+${MODULE}-objs += zfs_ioctl.o
+${MODULE}-objs += zfs_log.o
+${MODULE}-objs += zfs_onexit.o
+${MODULE}-objs += zfs_replay.o
+${MODULE}-objs += zfs_rlock.o
+${MODULE}-objs += zfs_sa.o
+${MODULE}-objs += zfs_vfsops.o
+${MODULE}-objs += zfs_vnops.o
+${MODULE}-objs += zfs_znode.o
+${MODULE}-objs += zil.o
+${MODULE}-objs += zio.o
+${MODULE}-objs += zio_checksum.o
+${MODULE}-objs += zio_compress.o
+${MODULE}-objs += zio_inject.o
+${MODULE}-objs += zle.o
+${MODULE}-objs += zrlock.o
+${MODULE}-objs += zvol.o