matrix_proxy required for row/column functions.

Could be implemented without to avoid this dependency


[SVN r29707]

libs/numeric/ublas

@@ -1 +1 @@
-Subproject commit e25b3c00f85e8feb316e82741c52be549dc434be
+Subproject commit 7e80615ed9ff6fae003beb12c25ee91fc089eb5b