bug 15003: vkCmdPipelineBarrier should be allowed on a DMA queue (WIP)

Add VK_PIPELINE_STAGE_ALL_{GRAPHICS,COMMANDS}_BIT.  Replace the removed masks
by ~VK_PIPELINE_STAGE_HOST_BIT in the sample driver.

s/VK_PIPELINE_STAGE_ALL_GRAPHICS\b/VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT/g
s/VK_PIPELINE_STAGE_ALL_GPU_COMMANDS/VK_PIPELINE_STAGE_ALL_COMMANDS_BIT/g

https://cvs.khronos.org/bugzilla/show_bug.cgi?id=15003
diff --git a/demos/cube.c b/demos/cube.c
index caab770..b5d710d 100644
--- a/demos/cube.c
+++ b/demos/cube.c
@@ -593,7 +593,7 @@
 
     prePresentBarrier.image = demo->buffers[demo->current_buffer].image;
     VkImageMemoryBarrier *pmemory_barrier = &prePresentBarrier;
-    vkCmdPipelineBarrier(cmd_buf, VK_PIPELINE_STAGE_ALL_GPU_COMMANDS, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
+    vkCmdPipelineBarrier(cmd_buf, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
                          0, 1, (const void * const*)&pmemory_barrier);
 
 
diff --git a/demos/tri.c b/demos/tri.c
index fb5b1a2..f0e2ff9 100644
--- a/demos/tri.c
+++ b/demos/tri.c
@@ -437,7 +437,7 @@
 
     prePresentBarrier.image = demo->buffers[demo->current_buffer].image;
     VkImageMemoryBarrier *pmemory_barrier = &prePresentBarrier;
-    vkCmdPipelineBarrier(demo->draw_cmd, VK_PIPELINE_STAGE_ALL_GPU_COMMANDS, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
+    vkCmdPipelineBarrier(demo->draw_cmd, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
                          0, 1, (const void * const*)&pmemory_barrier);
 
     err = vkEndCommandBuffer(demo->draw_cmd);