grep IP at the start of lines

I'm not sure if this regex works best, so I'm patching this single file as a sample.

Don't forget to update `mail-whois-lines.conf` after this patch got merged.

For the following logs, `grep '[^0-9]199.48.161.87[^0-9]'` will output nothing, while `grep '\([^0-9]\|^\)199.48.161.87[^0-9]'` works:
<pre>199.48.161.87 - - [09/Sep/2014:13:38:54 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:38:56 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:38:58 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:00 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:05 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:05 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:13 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:21 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:32 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:34 +0800] "POST /wp-login.php HTTP/1.1" 403 4674 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:34 +0800] "POST /wp-login.php HTTP/1.1" 403 168 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:34 +0800] "POST /wp-login.php HTTP/1.1" 403 168 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:35 +0800] "POST /wp-login.php HTTP/1.1" 403 168 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:35 +0800] "POST /wp-login.php HTTP/1.1" 403 168 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com
199.48.161.87 - - [09/Sep/2014:13:39:35 +0800] "POST /wp-login.php HTTP/1.1" 403 168 "-" "Mozilla/5.0 (Windows NT 6.1; rv:5.0) Gecko/20100101 Firefox/5.0" - hitsjapan.com</pre>
Post-release boost to .dev
actions: bug fix in lambdas in checkBan, because getBansMerged could return None (purge resp. asynchronous addBan), make the logic all around more stable;
test cases: extended with test to check action together with database functionality (ex.: to verify lambdas in checkBan);
database: getBansMerged should work within lock, using reentrant lock (cause call of getBans inside of getBansMerged);
Test cases fixed:
	testFail2BanExceptHook - use local sys.__excepthook__ to check was really executed and prevent write error in stderr.
BF: fix $ for % in jail.conf. Debian bug #767255
code review
few confusing merge info helper
Use multiport for firewallcmd-new
Merge pull request #840 from opoplawski/firewallcmd-multiport

Use multiport for firewallcmd-new
Merge pull request #807 from xslidian/patch-1

grep IP at the start of lines
improving grepping
ChangeLog for firewallcmd-new multiport support
Merge pull request #841 from opoplawski/firewallcmd-multiport

ChangeLog for firewallcmd-new multiport support
Bug fix in formatJournalEntry, gh-851

 Unhandled exception in fail2ban 0.9.1 #851
Merge pull request #852 from sebres/patch-1

Bug fix in formatJournalEntry, gh-851
Add ignoreregex to avoid warning on start
Add ignoreregex to avoid warning on start
Fixed the fail2ban init file issue.

Fixed some issues with the DAEMON's path and the SOCKFILE's location.
Merge pull request #858 from g1franc/master

Add ignoreregex to avoid warning on start
BF: failregex declared direct in jail was joined to single line, (specifying of multiple expressions was not possible);
feature request (gh-867): new options for jail introduced addfailregex/addignoreregex: extends regex specified in filter (opposite to failregex/ignoreregex that overwrites it);