Question about building RPI images with -current sources

[Brian Buhrow <buhrow%nfbcal.org@localhost>]

	hello.  In order to get RPI images to build, I had to make the
following change to the RPI_INSTALL and RPI2_INSTALL kernel configuration files.
My question is, how is it that the automated builder can build these images
without this change, but I cannot?  I am running into buffer size issues
without this change. My sources are CVS'd as of 12/27/2016.
My resulting kernels don't boot, but I think that's an unrelated issue to
the one I'm having.
Here's the diff, then my build arguments.

-thanks
-Brian


Index: RPI_INSTALL
===================================================================
RCS file: /cvsroot/src/sys/arch/evbarm/conf/RPI_INSTALL,v
retrieving revision 1.8
diff -u -r1.8 RPI_INSTALL
--- RPI_INSTALL	23 Feb 2015 23:21:47 -0000	1.8
+++ RPI_INSTALL	4 Jan 2017 19:09:24 -0000
@@ -8,7 +8,7 @@
 include "arch/evbarm/conf/INSTALL"
 
 no options	MEMORY_DISK_ROOT_SIZE
-options 	MEMORY_DISK_ROOT_SIZE=29696
+options 	MEMORY_DISK_ROOT_SIZE=65535
 
 makeoptions	RAMDISKNAME=sshramdisk
 no makeoptions	DEBUG


Build arguments:

===> build.sh command:    ./build.sh -N 2 -D /var/tmp/netbsd-rpi -O /usr/local/netbsd/obj-rpi -m evbarm -a earmhf -j 4 -U release