Fixed the incorrect behaviour of vzmigrate in quiet mode

1. Fixed the problem with calling vzmigrate script in nonverbose mode. Problem
is the following. If out is set to "&> /dev/null" bash treats $out as '&>'
/dev/null. This provokes  a crush of vzmigrate  on scp $a $b '&>' /dev/null.
Problem is solved by adding logexec () function for execution scp, ssh and vzctl
commands.

2. echo's replaced by log 1

http://bugzilla.openvz.org/show_bug.cgi?id=401
1 file changed