Fix the MS-Windows build as followup to gnulib update

* nt/gnulib.mk (libgnu_a_SOURCES): Remove get-permissions.c and
set-permissions.c, as they don't compile on MinGW.
(gnulib module qcopy-acl): Remove, as it needs set-permissions.c.

nt/gnulib.mk

@@ -66,8 +66,7 @@ HAVE_INCLUDE_NEXT = (__GNUC__ || 60000000 <= __DECC_VER)
 
 ## begin gnulib module acl-permissions
 
-libgnu_a_SOURCES += acl-errno-valid.c acl-internal.c \
-  get-permissions.c set-permissions.c
+libgnu_a_SOURCES += acl-errno-valid.c acl-internal.c
 
 EXTRA_DIST += acl-internal.h acl.h acl_entries.c
 
@@ -532,12 +531,6 @@ EXTRA_libgnu_a_SOURCES += putenv.c
 
 ## end   gnulib module putenv
 
-## begin gnulib module qcopy-acl
-
-libgnu_a_SOURCES += qcopy-acl.c
-
-## end   gnulib module qcopy-acl
-
 ## begin gnulib module readlink