File no-doc-for-lib.diff of Package rpmlint

Index: FilesCheck.py
===================================================================
--- FilesCheck.py.orig
+++ FilesCheck.py
@@ -823,7 +823,7 @@ class FilesCheck(AbstractCheck.AbstractC
         debuginfo_srcs = False
         debuginfo_debugs = False
 
-        if not doc_files:
+        if not lib_package and not doc_files:
             printWarning(pkg, 'no-documentation')
 
         if files: