lib: make rendercopy.h an internal header

And move the public interfaces into intel_batchbuffer.[hc].

A bit messy since we are fairly inconsistent with our header #include
handling.

Also exclude rendercopy.h from the documentation.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

tests/gem_render_linear_blits.c

@@ -37,8 +37,24 @@
 #include "config.h"
 #endif
 
-#include "rendercopy.h"
-
+#include <assert.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <getopt.h>
+#include "drm.h"
+#include "i915_drm.h"
+#include "drmtest.h"
+#include "intel_bufmgr.h"
+#include "intel_batchbuffer.h"
+#include "intel_gpu_tools.h"
 #define WIDTH 512
 #define STRIDE (WIDTH*4)
 #define HEIGHT 512