K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2012-07-27T05:48:42.021342Z
K 7
svn:log
V 570
Migrate the descriptor allocation function to not care about the number
of buffers, only the number of descriptors.

This involves:

* Change the allocation function to not use nbuf at all;
* When calling it, pass in "nbuf * ndesc" to correctly update how many
  descriptors are being allocated.

Whilst here, fix the descriptor allocation code to correctly allocate
a larger buffer size if the Merlin 4KB WAR is required.  It overallocates
descriptors when allocating a block that doesn't ever have a 4KB boundary
being crossed, but that can be fixed at a later stage.

END