Very minor doc updates. Still need a lot of work.

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%403318

dlib/statistics/dpca_abstract.h

@@ -22,7 +22,6 @@ namespace dlib
                 Must be some type of dlib::matrix capable of representing a column vector.
 
             INITIAL VALUE
-                - dpca_matrix().size() == 0
                 - in_vector_size() == 0
                 - between_class_weight() == 1
                 - within_class_weight() == 1

dlib/svm/empirical_kernel_map_abstract.h

@@ -189,6 +189,7 @@ namespace dlib
                 - is_vector(vect) == true
                 - vect.size() == out_vector_size()
                 - out_vector_size() != 0
+                - TODO premultiply_projections_by() hasn't been called
             ensures
                 - This function interprets the given vector as a point in the kernel feature space defined 
                   by this empirical_kernel_map.  The return value of this function is a distance