Renamed softpipe directories and files to something less confusing.

softpipe/state_tracker --> state_tracker/
softpipe/              --> pipe/
softpipe/generic       --> pipe/softpipe/

I don't think pipe is a great name, but I disliked all the others too.
Luckily it's fairly easy to rename with git, so this can be revisited
later.

src/mesa/state_tracker/st_program.h

@@ -0,0 +1,68 @@
+/**************************************************************************
+ * 
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+ /*
+  * Authors:
+  *   Keith Whitwell <keith@tungstengraphics.com>
+  */
+    
+
+#ifndef ST_PROGRAM_H
+#define ST_PROGRAM_H
+
+struct st_fragment_program
+{
+   struct gl_fragment_program Base;
+   GLboolean error;             /* If program is malformed for any reason. */
+
+   GLuint    id;		/* String id, for tracking
+				 * ProgramStringNotify changes.
+				 */
+
+#if 0   
+   GLfloat (*cbuffer)[4];
+   GLuint nr_constants;
+
+   /* Translate all the parameters, etc, into a constant buffer which
+    * we update on state changes.
+    */
+   struct
+   {
+      GLuint reg;               /* Constant idx */
+      const GLfloat *values;    /* Pointer to tracked values */
+   } *param;
+   GLuint nr_params;
+
+   GLuint param_state;
+#endif
+};
+
+
+void st_init_cb_program( struct st_context *st );
+void st_destroy_cb_program( struct st_context *st );
+
+#endif