2. Rename the internal function name EraseCursor() to FlushCursor() to remove the confusion on this function name. And add detailed function description for it.
Signed-off-by: vanjeff
Reviewed-by: rsun3
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11710 6f19259b-4bc3-4df7-8a09-765794883524