Rename CoglIndexArray to CoglIndexBuffer

This is part of a broader cleanup of some of the experimental Cogl API.
One of the reasons for this particular rename is to switch away from
using the term "Array" which implies a regular, indexable layout which
isn't the case. We also want to strongly imply a relationship between
CoglBuffers and CoglIndexBuffers and be consistent with the
CoglAttributeBuffer and CoglPixelBuffer APIs.

cogl/cogl-index-buffer.h

@@ -0,0 +1,79 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2010 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ *
+ * Authors:
+ *   Robert Bragg <robert@linux.intel.com>
+ */
+
+#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
+#error "Only <cogl/cogl.h> can be included directly."
+#endif
+
+#ifndef __COGL_INDEX_BUFFER_H__
+#define __COGL_INDEX_BUFFER_H__
+
+G_BEGIN_DECLS
+
+/**
+ * SECTION:cogl-index-buffer
+ * @short_description: Functions for creating and manipulating vertex
+ * indices.
+ *
+ * FIXME
+ */
+
+typedef struct _CoglIndexBuffer	      CoglIndexBuffer;
+
+/**
+ * cogl_index_buffer_new:
+ * @bytes: The number of bytes to allocate for vertex attribute data.
+ *
+ * Declares a new #CoglIndexBuffer of @size bytes to contain vertex
+ * indices. Once declared, data can be set using
+ * cogl_buffer_set_data() or by mapping it into the application's
+ * address space using cogl_buffer_map().
+ *
+ * Since: 1.4
+ * Stability: Unstable
+ */
+CoglIndexBuffer *
+cogl_index_buffer_new (gsize bytes);
+
+/**
+ * cogl_is_index_buffer:
+ * @object: A #CoglObject
+ *
+ * Gets whether the given object references a #CoglIndexBuffer.
+ *
+ * Returns: %TRUE if the handle references a #CoglIndexBuffer,
+ *   %FALSE otherwise
+ *
+ * Since: 1.4
+ * Stability: Unstable
+ */
+gboolean
+cogl_is_index_buffer (void *object);
+
+G_END_DECLS
+
+#endif /* __COGL_INDEX_BUFFER_H__ */
+