FIX sparse non_zeros is capacity, consistent with coordinate and compressed

FIX sparse_matrix removed minumum in restrict_nz


[SVN r25805]

libs/numeric/ublas

@@ -1 +1 @@
-Subproject commit 1b65136896e376cab15b4f400f874ae706b5022c
+Subproject commit 45229f85646299d043ec5e4042bd8d446d0588ae