pixmaps's contents are undefined, so we won't need to upload the
    undefined contents in MoveIn. Use the ExaCheck* for async ops as well,
    so that dirty is always tracked. While the performance impact for my ls
    -lR test was not significant (though the avoiding-upload path was being
    hit), it's likely to be important for the upcoming Get/PutImage
    acceleration from ajax.
						
					
				
			 | 
			||
|---|---|---|
| .. | ||
| Makefile.am | ||
| exa.c | ||
| exa.h | ||
| exaPriv.h | ||
| exa_accel.c | ||
| exa_migration.c | ||
| exa_offscreen.c | ||
| exa_priv.h | ||
| exa_render.c | ||
| exa_unaccel.c | ||
| exaasync.c | ||
| exaoffscreen.c | ||
| exapict.c | ||