Port /bin/sh scripts to Solaris 10

Its /bin/sh builtin ‘test’ command does not support -e.
* autogen.sh, build-aux/git-hooks/pre-commit:
* build-aux/gitlog-to-emacslog, make-dist:
Use test -r, not test -e.

autogen.sh

@@ -115,7 +115,7 @@ for arg; do
         do_check=false;;
       all)
 	do_autoconf=true
-	test -e .git && do_git=true;;
+	test -r .git && do_git=true;;
       autoconf)
 	do_autoconf=true;;
       git)
@@ -128,7 +128,7 @@ done
 case $do_autoconf,$do_git in
   false,false)
     do_autoconf=true
-    test -e .git && do_git=true;;
+    test -r .git && do_git=true;;
 esac
 
 # Generate Autoconf-related files, if requested.
@@ -294,7 +294,7 @@ git_config ()
 # Get location of Git's common configuration directory.  For older Git
 # versions this is just '.git'.  Newer Git versions support worktrees.
 
-{ test -e .git &&
+{ test -r .git &&
   git_common_dir=`git rev-parse --no-flags --git-common-dir 2>/dev/null` &&
   test -n "$git_common_dir"
 } || git_common_dir=.git
@@ -377,7 +377,7 @@ fi
 
 if test ! -f configure; then
     echo "You can now run '$0 autoconf'."
-elif test -e .git && test $git_was_ok = false && test $do_git = false; then
+elif test -r .git && test $git_was_ok = false && test $do_git = false; then
     echo "You can now run '$0 git'."
 elif test ! -f config.status ||
 	test -n "`find configure src/config.in -newer config.status`"; then

build-aux/git-hooks/pre-commit

@@ -28,7 +28,7 @@ exec >&2
 # When doing a two-way merge, ignore problems that came from the other
 # side of the merge.
 head=HEAD
-if test -e "$GIT_DIR"/MERGE_HEAD; then
+if test -r "$GIT_DIR"/MERGE_HEAD; then
   merge_heads=`cat "$GIT_DIR"/MERGE_HEAD` || exit
   for merge_head in $merge_heads; do
     case $head in

build-aux/gitlog-to-emacslog

@@ -68,7 +68,7 @@ if [ -f "$output" ]; then
 fi
 
 # If this is not a Git repository, just generate an empty ChangeLog.
-test -e .git || {
+test -r .git || {
   >"$output"
   exit
 }
@@ -81,7 +81,7 @@ test -e .git || {
   --ignore-line='^; ' --format='%B' \
   "$gen_origin..$new_origin" >"ChangeLog.tmp" || exit
 
-if test -e "ChangeLog.tmp"; then
+if test -r "ChangeLog.tmp"; then
 
   # Fix up bug references.
   # This would be better as eg a --transform option to gitlog-to-changelog,

make-dist

@@ -240,7 +240,7 @@ if [ $check = yes ]; then
   bogosities=
   while read elc; do
       el=`echo $elc | sed 's/c$//'`
-      [ -e $el ] || continue
+      [ -r $el ] || continue
       [ $elc -nt $el ] || bogosities="$bogosities $elc"
   done < /tmp/elc
 
@@ -278,7 +278,7 @@ if [ $check = yes ]; then
       info=`sed -n 's/^@setfilename //p' $texi | sed 's|.*info/||'`
       [ x"${info}" != x"" ] || continue
       info=info/$info
-      [ -e $info ] || continue
+      [ -r $info ] || continue
       [ $info -nt $texi ] || bogosities="$bogosities $info"
   done < /tmp/el
 
@@ -292,7 +292,7 @@ if [ $check = yes ]; then
 
   ## This exits with non-zero status if any .info files need
   ## rebuilding.
-  if [ -e Makefile ]; then
+  if [ -r Makefile ]; then
       echo "Checking to see if info files are up-to-date..."
       make --question info || error=yes
   fi
@@ -300,7 +300,7 @@ if [ $check = yes ]; then
   ## Is this a release?
   case $version in
       [1-9][0-9].[0-9])
-          if [ -e ChangeLog ]; then
+          if [ -r ChangeLog ]; then
               if ! grep -q "Version $version released" ChangeLog; then
                   echo "No release notice in ChangeLog"
                   error=yes
@@ -359,10 +359,10 @@ echo "Creating top directory: '${tempdir}'"
 mkdir ${tempdir}
 
 if [ "$changelog" = yes ]; then
-  if test -e .git; then
+  if test -r .git; then
     ## When making a release or pretest the ChangeLog should already
     ## have been created and edited as needed.  Don't ignore it.
-    if test -e ChangeLog; then
+    if test -r ChangeLog; then
       echo "Using existing top-level ChangeLog"
     else
       echo "Making top-level ChangeLog"