[coq] Untabify the whole ML codebase.

We also remove trailing whitespace.

Script used:

```bash
for i in `find . -name '*.ml' -or -name '*.mli' -or -name '*.mlg'`; do expand -i "$i" | sponge "$i"; sed -e's/[[:space:]]*$//' -i.bak "$i"; done
```

1 files changed, 1 insertions, 1 deletions

diff --git a/clib/cArray.mli b/clib/cArray.mli
index 090d2bf627..f94af26515 100644
--- a/clib/cArray.mli
+++ b/clib/cArray.mli
@@ -110,7 +110,7 @@ sig
   (** Same with two arrays, folding on the left *)
 
   val distinct : 'a array -> bool
-  (** Return [true] if every element of the array is unique (for default 
+  (** Return [true] if every element of the array is unique (for default
       equality). *)
 
   val rev_of_list : 'a list -> 'a array