[client] minor man page backwards compatibility update to include better examples
Interim commit to make the log_msg strategy.

  * log_msg : New log_set_verbosity(): It sets the default verbosity for the
    log module according to the verbose option set by the user through the command
    line.
  * Remove useless checks of the verbose option when log_msg() is invoked.
Fix log_msg().

  * Added new constant LOG_WITHOUT_SYSLOG to be able to print messages to
    stderr only.
  * Renamed LOG_STDERR_MASK as LOG_VERBOSITY_MASK for a better understanding.
Fix static_log_flag in the log_module.
s/fprintf(stderr/log_msg(LOG_ERR/
Merge remote-tracking branch 'upstream/master'
Replaced some uses of *fprintf(stderr* by *log_msg(LOG_ERR* in config_init.c
Fixed default verbosity to LOG_NOTICE rather than LOG_WARNING.
Merge remote-tracking branch 'fjoncourt/master'

New strategy for log_module from Franck, closes #89
[test suite] bug fix for missing file permission mods noticed by Franck
[client] add GPG_ALLOW_NO_SIGNING_PW and --gpg-no-signing-pw

This change brings similar functionality to the client as the GPG_ALLOW_NO_PW
keyword in the server access.conf file.  Although this option is less likely
to be used than the analogous server functionality, it stands to reason that
the client should offer this feature.  The test suite has also been updated to
not use the --get-key option for the 'no password' GPG tests.