configure: Use string comparison for directory inodes.
Inode values might be larger than integers supported by the shell.
Fixes #1105.
diff --git a/configure b/configure
index df84971..584e6ec 100755
--- a/configure
+++ b/configure
@@ -93,7 +93,7 @@
inode_src=`ls -id $abs_ft2_dir | awk '{print $1}'`
inode_dst=`ls -id $abs_curr_dir | awk '{print $1}'`
-if test $inode_src -ne $inode_dst; then
+if test $inode_src != $inode_dst; then
if test ! -d docs; then
mkdir docs
echo "Copying documentation assets"
