Output of ar has truncated timestamps on fuse.encfs

[Gauthier Ãstervall <gauthier at ostervall dot se>]

Timestamp of the ar output is truncated after the seconds, if the
current filesystem is of type fuse.encfs.

gauthier@sobel:~/tmp/ar_fuse_encfs_test $ encfs
~/tmp/ar_fuse_encfs_test/enc ~/tmp/ar_fuse_encfs_test/dec
...
gauthier@sobel:~/tmp/ar_fuse_encfs_test $ df -T dec
Filesystem     Type       1K-blocks      Used Available Use% Mounted on
encfs          fuse.encfs 961301832 411164152 501283256  46%
/home/gauthier/tmp/ar_fuse_encfs_test/dec
gauthier@sobel:~/tmp/ar_fuse_encfs_test $ cd dec
gauthier@sobel:~/tmp/ar_fuse_encfs_test/dec $ make
gcc -c hello.c -o hello.o -g -Wall -Wextra -Werror -O3 -lrt -pthread
ar -cvq hello.a hello.o
a - hello.o
gauthier@sobel:~/tmp/ar_fuse_encfs_test/dec $ ll --full-time
total 24
-rw-rw-r-- 1 gauthier gauthier 6022 2014-11-24 12:59:30.000000000 +0100 hello.a
-rw-rw-r-- 1 gauthier gauthier   81 2014-11-24 12:57:38.048545000 +0100 hello.c
-rw-rw-r-- 1 gauthier gauthier 5880 2014-11-24 12:59:30.703129595 +0100 hello.o
-rw-rw-r-- 1 gauthier gauthier  259 2014-11-24 12:57:46.928434000 +0100 makefile

(see timestamp for hello.a)

I got confused as to why ar was running when it should have been
unnecessary, when running make a second time. The lib looks like it's
older than the object file.

I am not sure if it is an issue with ar or with encfs. The object file
does get a correct timestamp. Please tell me if it's an encfs problem,
and I'll post there.