logrotate: fix default mail command and state file path

[jacklul]

Closes Entware/Entware#1259

Compile tested: armv7sf-k3.2
Run tested: armv7sf-k3.2

Current version:

admin@RT-AX58U:/jffs# /opt/sbin/logrotate --help
Usage: logrotate [OPTION...] <configfile>
  -d, --debug                   Don't do anything, just test and print debug messages
  -f, --force                   Force file rotation
  -m, --mail=command            Command to send mail (instead of `/bin/mail')
  -s, --state=statefile         Path of state file
      --skip-state-lock         Do not lock the state file
      --wait-for-state-lock     Wait for lock on the state file
  -v, --verbose                 Display messages during rotation
  -l, --log=logfile             Log file or 'syslog' to log to syslog
      --version                 Display version information

Help options:
  -?, --help                    Show this help message
      --usage                   Display brief usage message

admin@RT-AX58U:/jffs# /opt/sbin/logrotate --debug /opt/etc/logrotate.conf

...
Reading state from file: /var/lib/logrotate.status
state file /var/lib/logrotate.status does not exist
Allocating hash table for state file, size 64 entries
...

With this patch:

admin@RT-AX58U:/jffs# /tmp/logrotate --help
Usage: logrotate [OPTION...] <configfile>
  -d, --debug                   Don't do anything, just test and print debug messages
  -f, --force                   Force file rotation
  -m, --mail=command            Command to send mail (instead of `/opt/bin/mail')
  -s, --state=statefile         Path of state file
      --skip-state-lock         Do not lock the state file
      --wait-for-state-lock     Wait for lock on the state file
  -v, --verbose                 Display messages during rotation
  -l, --log=logfile             Log file or 'syslog' to log to syslog
      --version                 Display version information

Help options:
  -?, --help                    Show this help message
      --usage                   Display brief usage message

admin@RT-AX58U:/jffs# /tmp/logrotate --debug /opt/etc/logrotate.conf

...
Reading state from file: /opt/var/lib/logrotate.status
Allocating hash table for state file, size 64 entries
...

I've also bumped PKG_RELEASE, as it seems appropriate.

Could also be fixed by adding new patch file instead, let me know if you'd prefer that.