bootstrap for SVN

[Sergey Poznyakoff]

Hello,

I have installed the following change to make bootstrap work better with
SVN repositories:

diff --git a/build-aux/bootstrap b/build-aux/bootstrap
index cf6b73b..1a24e82 100755
--- a/build-aux/bootstrap
+++ b/build-aux/bootstrap
@@ -415,6 +415,8 @@ version_controlled_file() {
             grep '^/[^/]*/[0-9]' > /dev/null && found=yes
   elif test -d .git; then
     git rm -n "$dir/$file" > /dev/null 2>&1 && found=yes
+  elif test -d .svn; then
+    svn log -r HEAD "$dir/$file" > /dev/null 2>&1 && found=yes  
   else
     echo "$0: no version control for $dir/$file?" >&2
   fi

Regards,
Sergey