UT / clsync

Fixed a regression made by a96d68fc

Issue: https://github.com/xaionaro/clsync/issues/140

Non-priv thread/process eat 100% while priv thread is working. This
commit is a temporary fix of the problem.

It's required to enable support of capabilities and cgroups

Was "--check-exec-args"

Bugreport: https://github.com/xaionaro/clsync/issues/133

./configure --enable-clsync --enable-cluster  --enable-paranoid=2 --enable-capabilities --enable-socket --enable-socket-library --enable-highload-locks
make

error.c:112:23: error: expected ‘)’ before ‘XTOSTR’

Fixes: https://github.com/xaionaro/clsync/issues/127

Barak's fixes for 0.4.1

Fixes: https://github.com/xaionaro/clsync/issues/121

Related: https://github.com/xaionaro/clsync/issues/124

Fixes: https://github.com/xaionaro/clsync/issues/122

Bug descritpion: The privileged helper process cannot die while
pthread_cond_wait().

Note: fixed, but not fully tested (it's hard to repeat the bug).

Clsync uses effective pid of "nobody" by default. In turn there's
no permission to create new files in /var/run on some systems under
the "nobody". So this patch uses "root" to create and fchown() the
file.

    Debug3 (pid: 19860; thread: 0x7f606105db40): main(): Trying to drop effective gid to 65533
    Debug3 (pid: 19860; thread: 0x7f606105db40): main(): Trying to drop effective uid to 65534
    Debug1 (pid: 19860; thread: 0x7f606105db40): main(): / [/] (0xf7eed0) -> rsync://********@**********/******* [***] (0xf7ba30)
    Warning (pid: 19860; thread: 0x7f606105db40): main(): Directory "/dev/shm/clsync" doesn't exist. Creating it.
    Debug2 (pid: 19860; thread: 0x7f606105db40): main(): Trying to open the pidfile "/var/run/clsync-backup.pid"
    Error (pid: 19860; thread: 0x7f606105db40): main(): Cannot open file "/var/run/clsync***.pid" to write a pid there (13: Permission denied)
    Debug3 (pid: 19860; thread: 0x7f606105db40): main(): Current errno is 13.
    Error (pid: 19860; thread: 0x7f606105db40): main(): Cannot unlink pidfile "/var/run/clsync***.pid" (2: No such file or directory)

Conflicts:
	debian/clsync-doc.install
	debian/control
	debian/libclsync0.install
	man/man1/clsync.1