[patch, fortran, doc, committed] Mention that SELECT CASE works for unsigned

[Thomas Koenig]

Hello world,

I just committed the attached documentatin patch as obvious,
in r15-5344-gbf00f117eb4b5527592029e39a3d79f2048745d8 .
Best regards

        Thomas

Document that SELECT CASE works for unsigned.

gcc/fortran/ChangeLog:

        * gfortran.texi: Document that SELECT CASE works for UNSIGNED.


diff --git a/gcc/fortran/gfortran.texi b/gcc/fortran/gfortran.texi
index a6617aa1571..c91d548fc55 100644
--- a/gcc/fortran/gfortran.texi
+++ b/gcc/fortran/gfortran.texi
@@ -2773,6 +2773,8 @@ formatted and unformatted I/O.  For formatted I/O, 
the @code{B},
 values and values which would overflow are rejected with
 @code{-pedantic}.

+@code{SELECT CASE} is supported for unsigned integers.
+
 The following intrinsics take unsigned arguments:
 @itemize @bullet
 @item @code{BGE}, @pxref{BGE}