Made specs more clear.

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%403792

dlib/svm/krr_trainer_abstract.h

@@ -110,6 +110,7 @@ namespace dlib
                   expressions such as get_kernel()(basis_samples(0), basis_samples(0)) should make sense.
             ensures
                 - #basis_loaded() == true
+                - training will be carried out in the span of the given basis_samples
         !*/
 
         bool basis_loaded (

dlib/svm/svm_c_ekm_trainer_abstract.h

@@ -159,6 +159,7 @@ namespace dlib
                   expressions such as get_kernel()(basis_samples(0), basis_samples(0)) should make sense.
             ensures
                 - #basis_loaded() == true
+                - training will be carried out in the span of the given basis_samples
         !*/
 
         bool basis_loaded (