Modify the loggen.c license from GPL to LGPL [skip-ci]

[norberttak]

Signed-off-by: norberttakacs norbert.takacs@balabit.com

[MrAnno]

(There is a typo in the commit message)

[kira-syslogng]

failure

[bazsi]

All main executables in syslog-ng has been licensed under the LGPL and not the GPL, so this in principle is in the right direction.

Pls allow me to check contributors of that code:

As I see this has been entirely been authored by Balabit employees, except for two lines by @ibmibmibm. I guess those authors are ok with the change.

The lines authored by @ibmibmibm are: 1) a free() call and (2) a close() call, both to fix a resource leak (one is a memory leak, the other is an fd leak). These are introduced by these patches:

commit c2dc2c6
Author: Shen-Ta Hsieh ibmibmibm.tw@gmail.com
Date: Tue Jan 16 17:19:50 2018 +0800

loggen: fix potential leak on strdup variable

Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>

commit f6fcd7e
Author: Shen-Ta Hsieh ibmibmibm.tw@gmail.com
Date: Tue Jan 16 17:15:42 2018 +0800

loggen: fix potential leak on socket fd

Signed-off-by: Shen-Ta Hsieh <ibmibmibm.tw@gmail.com>

I do not consider those lines to be copyrightable, based on these articles:

https://en.wikipedia.org/wiki/Idea%E2%80%93expression_divide
http://guides.lib.umich.edu/copyrightbasics/copyrightability
https://meta.wikimedia.org/wiki/Wikilegal/Sweat_of_the_Brow

Basically, there's only one way to free() a memory area or to close() an fd, thus "modicum of creativity" is not reached.

With that explanation, this is signed-off-by and approved by me.

@ibmibmibm I hope you agree with my explanation and are ok with the change from GPL to LGPL.