Merge branch 'ja/doc-status-types-and-copies'

A few kinds of changes "git status" can show were not documented.

* ja/doc-status-types-and-copies:
  Documentation/git-status: mention how to detect copies
  Documentation/git-status: document porcelain status T (typechange)
  Documentation/diff-format: state in which cases porcelain status is T
  Documentation/git-status: remove impossible porcelain status DR and DC

Documentation/diff-format.txt

@@ -59,7 +59,7 @@ Possible status letters are:
 - D: deletion of a file
 - M: modification of the contents or mode of a file
 - R: renaming of a file
-- T: change in the type of the file
+- T: change in the type of the file (regular file, symbolic link or submodule)
 - U: file is unmerged (you must complete the merge before it can
   be committed)
 - X: "unknown" change type (most probably a bug, please report it)

Documentation/git-status.txt

@@ -207,26 +207,29 @@ show tracked paths:
 
 * ' ' = unmodified
 * 'M' = modified
+* 'T' = file type changed (regular file, symbolic link or submodule)
 * 'A' = added
 * 'D' = deleted
 * 'R' = renamed
-* 'C' = copied
+* 'C' = copied (if config option status.renames is set to "copies")
 * 'U' = updated but unmerged
 
 ....
 X          Y     Meaning
 -------------------------------------------------
 	 [AMD]   not updated
-M        [ MD]   updated in index
-A        [ MD]   added to index
+M        [ MTD]  updated in index
+T        [ MTD]  type changed in index
+A        [ MTD]  added to index
 D                deleted from index
-R        [ MD]   renamed in index
-C        [ MD]   copied in index
-[MARC]           index and work tree matches
-[ MARC]     M    work tree changed since index
-[ MARC]     D    deleted in work tree
-[ D]        R    renamed in work tree
-[ D]        C    copied in work tree
+R        [ MTD]  renamed in index
+C        [ MTD]  copied in index
+[MTARC]          index and work tree matches
+[ MTARC]    M    work tree changed since index
+[ MTARC]    T    type changed in work tree since index
+[ MTARC]    D    deleted in work tree
+	    R    renamed in work tree
+	    C    copied in work tree
 -------------------------------------------------
 D           D    unmerged, both deleted
 A           U    unmerged, added by us