detection for the lib/sysquota.c interface fails in current v3-4-test
because of a bug in lib/util/tevent_ntstatus.h : it includes config.h:

configure called with --with-quotas (and --with-sys-quotas=yes, but this does not make a difference). Here is the important part of config.log:

configure:73334: checking whether the sys_quota interface works
configure:73370: ccache gcc -c   -g -ggdb   -Wc++-compat   -Wcomment   -Wpointer-arith   -Wcast-align   -Wwrite-strings   -Wstrict-prototypes   -Wstrict-aliasing   -Wmiss
ing-prototypes   -Wmissing-declarations   -Wshadow   -Wdeclaration-after-statement   -D_FORTY_SOURCE=2   -fmessage-length=0  -g   -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BIT
S=64 -D_GNU_SOURCE  -Iinclude -I./include  -I. -I. -I./../lib/replace -I./../lib/talloc -I./../lib/tevent -I./../lib/tdb/include -I./libaddns -I./librpc -I./.. -I./../lib
/popt -I/usr/include -DLDAP_DEPRECATED -Iinclude -I./include  -I. -I. -I./../lib/replace -I./../lib/talloc -I./../lib/tevent -I./../lib/tdb/include -I./libaddns -I./librp
c -I./.. -I./../lib/popt conftest.c >&5
In file included from include/includes.h:581,
                 from ./lib/sysquotas_linux.c:21,
                 from conftest.c:583:
./../lib/util/tevent_ntstatus.h:25:20: error: config.h: No such file or directory
In file included from conftest.c:583:
./lib/sysquotas_linux.c:442: warning: no previous prototype for 'sys_get_vfs_quota'
...