Description of problem:
'dconf update' changes permissions on 'etc/dconf/db/local' if umask is set

Version-Release number of selected component (if applicable):
dconf-0.16.0-6.el7.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Login as root
2. Set umask by executing 'umask 0077'
3. Execute 'touch /etc/dconf/db/local.d/00-temp' to create a new file under ' /etc/dconf/db/local.d/' directory.

4. Execute 'dconf update'

Actual results:
'/etc/dconf/db/local' file is not readable by non-root users.

# ls -lh /etc/dconf/db/local
-rw-------. 1 root root 61 Sep 24 04:08 /etc/dconf/db/local

Expected results:
'/etc/dconf/db/local' should be readable by non-root users.

Additional info:
strace shows a new file is created and renamed to '/etc/dconf/db/local' :

28288 04:08:37 open("/etc/dconf/db/local", O_WRONLY) = 3 <0.000017>
28288 04:08:37 open("/etc/dconf/db/local.L2LU5X", O_RDWR|O_CREAT|O_EXCL, 0666) = 4 <0.000257>
28288 04:08:37 fallocate(4, 0, 0, 61)   = 0 <0.000088>
28288 04:08:37 write(4, "GVariant\0\0\0\0\0\0\0\0\30\0\0\0<\0\0\0\0\0\0(\1\0\0\0"..., 61) = 61 <0.000017>
28288 04:08:37 fstatfs(4, {f_type=0x58465342, f_bsize=4096, f_blocks=7720261, f_bfree=5457808, f_bavail=5457808, f_files=30896128, f_ffree=30720557, f_fsid={64768, 0}, f_namelen=255, f_frsize=4096}) = 0 <0.000014>
28288 04:08:37 lstat("/etc/dconf/db/local", {st_dev=makedev(253, 0), st_ino=69189057, st_mode=S_IFREG|0644, st_nlink=1, st_uid=0, st_gid=0, st_blksize=4096, st_blocks=8, st_size=61, st_atime=2015/09/24-04:06:59, st_mtime=2015/09/24-04:06:38, st_ctime=2015/09/24-04:06:39}) = 0 <0.000015>
28288 04:08:37 fsync(4)                 = 0 <0.061986>
28288 04:08:38 close(4)                 = 0 <0.000063>
28288 04:08:38 rename("/etc/dconf/db/local.L2LU5X", "/etc/dconf/db/local") = 0 <0.000061>
28288 04:08:38 write(3, "\0\0\0\0\0\0\0\0", 8) = 8 <0.000024>
28288 04:08:38 close(3)