"port/atomics/arch-*.h" are missing from installation

I got the following error when I try to build my extension
towards the latest master branch.

Is the "port/atomics/*.h" files forgotten on make install?

[kaigai(at)magro pg_strom]$ make
gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith
-Wdeclaration-after-statement -Wendif-labels
-Wmissing-format-attribute -Wformat-security -fno-strict-aliasing
-fwrapv -fexcess-precision=standard -g -fpic -Wall -O0
-DPGSTROM_DEBUG=1 -I. -I./ -I/usr/local/pgsql/include/server
-I/usr/local/pgsql/include/internal -D_GNU_SOURCE -c -o shmem.o
shmem.c
In file included from /usr/local/pgsql/include/server/storage/barrier.h:21:0,
from shmem.c:18:
/usr/local/pgsql/include/server/port/atomics.h:65:36: fatal error:
port/atomics/arch-x86.h: No such file or directory
# include "port/atomics/arch-x86.h"
^
compilation terminated.
make: *** [shmem.o] Error 1

Even though the source directory has header files...

[kaigai(at)magro sepgsql]$ find ./src | grep atomics
./src/include/port/atomics
./src/include/port/atomics/generic-xlc.h
./src/include/port/atomics/arch-x86.h
./src/include/port/atomics/generic-acc.h
./src/include/port/atomics/arch-ppc.h
./src/include/port/atomics/generic.h
./src/include/port/atomics/arch-hppa.h
./src/include/port/atomics/generic-msvc.h
./src/include/port/atomics/arch-ia64.h
./src/include/port/atomics/generic-sunpro.h
./src/include/port/atomics/arch-arm.h
./src/include/port/atomics/generic-gcc.h
./src/include/port/atomics/fallback.h
./src/include/port/atomics.h
./src/backend/port/atomics.c

the install destination has only atomics.h

[kaigai(at)magro sepgsql]$ find /usr/local/pgsql/include | grep atomics
/usr/local/pgsql/include/server/port/atomics.h

The attached patch is probably right remedy.

Thanks,
--
KaiGai Kohei <kaigai(at)kaigai(dot)gr(dot)jp>