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/harwell_boeing.h

@@ -0,0 +1,48 @@
+// 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_HARWELL_BOEING_H
+#define IGL_HARWELL_BOEING_H
+#include "igl_inline.h"
+
+#include <Eigen/Sparse>
+#include <vector>
+
+
+namespace igl
+{
+  // Convert the matrix to Compressed sparse column (CSC or CCS) format,
+  // also known as Harwell Boeing format. As described:
+  // http://netlib.org/linalg/html_templates/node92.html
+  // or
+  // http://en.wikipedia.org/wiki/Sparse_matrix
+  //   #Compressed_sparse_column_.28CSC_or_CCS.29
+  // Templates:
+  //   Scalar  type of sparse matrix like double
+  // Inputs:
+  //   A  sparse m by n matrix
+  // Outputs:
+  //   num_rows  number of rows
+  //   V  non-zero values, row indices running fastest, size(V) = nnz 
+  //   R  row indices corresponding to vals, size(R) = nnz
+  //   C  index in vals of first entry in each column, size(C) = num_cols+1
+  //
+  // All indices and pointers are 0-based
+  template <typename Scalar, typename Index>
+  IGL_INLINE void harwell_boeing(
+    const Eigen::SparseMatrix<Scalar> & A,
+    int & num_rows,
+    std::vector<Scalar> & V,
+    std::vector<Index> & R,
+    std::vector<Index> & C);
+}
+
+#ifndef IGL_STATIC_LIBRARY
+#  include "harwell_boeing.cpp"
+#endif
+
+#endif