Struct buffer changes break nextstep build

[Chad Brown]

I won't have time to attempt the (supposedly straightforward) changes
until Wednesday at least, but in case someone else has a chance:

gcc -c  -Demacs -DHAVE_CONFIG_H  -I. -I/usr/local/src/emacs/working/src 
-I../lib -I/usr/local/src/emacs/working/src/../lib               -MMD -MF 
deps/nsfns.d   -Wimplicit-function-declaration -Wold-style-definition 
-Wdeclaration-after-statement -Wno-pointer-sign  -g -O2  nsfns.m
nsfns.m: In function ‘ns_set_name_as_filename’:
nsfns.m:608: error: ‘struct buffer’ has no member named ‘filename’
nsfns.m:609: error: ‘struct buffer’ has no member named ‘name’
nsfns.m: In function ‘Fns_read_file_name’:
nsfns.m:1431: error: ‘struct buffer’ has no member named ‘directory’

This is the only issue I found with `make -k'.

Thanks,
*Chad