Building igl statically and moving to the dep scripts

Fixing dep build script on Windows and removing some warnings.

Use bundled igl by default.

Not building with the dependency scripts if not explicitly stated. This way, it will stay in
Fix the libigl patch to include C source files in header only mode.

src/libigl/igl/normalize_row_sums.h

@@ -0,0 +1,33 @@
+// This file is part of libigl, a simple c++ geometry processing library.
+// 
+// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
+// 
+// This Source Code Form is subject to the terms of the Mozilla Public License 
+// v. 2.0. If a copy of the MPL was not distributed with this file, You can 
+// obtain one at http://mozilla.org/MPL/2.0/.
+#ifndef IGL_NORMALIZE_ROW_SUMS_H
+#define IGL_NORMALIZE_ROW_SUMS_H
+#include "igl_inline.h"
+#include <Eigen/Core>
+
+namespace igl
+{
+  // Normalize the rows in A so that their sums are each 1 and place the new
+  // entries in B
+  // Inputs:
+  //   A  #rows by k input matrix
+  // Outputs:
+  //   B  #rows by k input matrix, can be the same as A
+  //
+  // Note: This is just calling an Eigen one-liner.
+  template <typename DerivedA, typename DerivedB>
+  IGL_INLINE void normalize_row_sums(
+    const Eigen::MatrixBase<DerivedA>& A,
+    Eigen::MatrixBase<DerivedB> & B);
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "normalize_row_sums.cpp"
+#endif
+
+#endif