perror: fix license problems

[Simon Josefsson]

Using the perror module results in warnings:

warning: module perror depends on a module with an incompatible license: 
intprops
warning: module perror depends on a module with an incompatible license: 
strerror

The reason appears to be because perror is 'LGPLv2+' while intprops and
strerror is 'LGPL'.

Does anyone see any problem with the patch below?

/Simon

diff --git a/modules/intprops b/modules/intprops
index f4709d5..0680adf 100644
--- a/modules/intprops
+++ b/modules/intprops
@@ -14,7 +14,7 @@ Include:
 "intprops.h"
 
 License:
-LGPL
+LGPLv2+
 
 Maintainer:
 Paul Eggert
diff --git a/modules/strerror b/modules/strerror
index b662401..1a204fa 100644
--- a/modules/strerror
+++ b/modules/strerror
@@ -20,7 +20,7 @@ Include:
 <string.h>
 
 License:
-LGPL
+LGPLv2+
 
 Maintainer:
 all