Include gnulib and paxutils as submodules.

* .gitmodules: New file.
* README-alpha: Update.
* README-hacking: Update.
* bootstrap: Install slightly modified version from the gnulib repo.
* bootstrap.conf: Add paxutils-related stuff.
* .gitignore: Update.
* doc/.gitignore: Update.
* po/.gitignore: Update.
* gnu/Makefile.am

bootstrap.conf

@@ -26,10 +26,6 @@ avoided_gnulib_modules='
 	--avoid=lock
 '
 
-# gnulib modules used by this package.
-gnulib_modules="$avoided_gnulib_modules
-`grep '^[^#]' gnulib.modules`
-"
 
 # Additional xgettext options to use.  Use "\\\newline" to break lines.
 XGETTEXT_OPTIONS=$XGETTEXT_OPTIONS'\\\
@@ -71,3 +67,60 @@ test -f ChangeLog || cat > ChangeLog <<EOT
 This file is a placeholder. It will be replaced with the actual ChangeLog
 by make dist.  Run make ChangeLog if you wish to create it earlier.
 EOT
+
+git submodule init
+git submodule update
+PAXUTILS=paxutils
+
+# gnulib modules used by this package.
+gnulib_modules="$avoided_gnulib_modules
+`grep -h '^[^#]' gnulib.modules $PAXUTILS/gnulib.modules`
+"
+
+# copy_files srcdir dstdir
+copy_files() {
+  for file in `cat $1/DISTFILES`
+  do
+    case $file in
+    "#*")  continue;;
+    esac
+    dst=`echo $file | sed 's^.*/^^'`
+    if [ $# -eq 3 ]; then
+      case $dst in
+      ${3}*) ;;
+      *) dst=${3}$dst;;
+      esac
+    fi
+    if [ "$2" = '.' ]; then
+      ln -sf $1/$file $2
+    else
+      symlink_to_dir "$1" "$file" "$2/$dst" || exit
+    fi
+# FIXME    ignorefile $2 $dst
+  done
+}
+
+# Import from paxutils
+copy_files ${PAXUTILS} .
+copy_files ${PAXUTILS}/am m4
+
+echo "$0: Creating m4/paxutils.m4"
+(echo "# This file is generated automatically. Please, do not edit."
+ echo "#"
+ echo "AC_DEFUN([${package}_PAXUTILS],["
+ cat ${PAXUTILS}/am/DISTFILES | sed '/^#/d;s/\(.*\)\.m4/pu_\1/' | tr a-z A-Z
+ echo "])") > ./m4/paxutils.m4
+#FIXME ignorefile m4 paxutils.m4
+
+if [ -d rmt ]; then
+   :
+else
+   mkdir rmt
+fi
+
+for dir in doc rmt lib tests
+do
+	copy_files ${PAXUTILS}/$dir $dir
+done
+
+copy_files ${PAXUTILS}/paxlib lib pax