Add a libcap target to link against libcap2.

Add a libcap target to link against libcap2.

Targets which need to link with -lcap can now depend on libcap.

BUG=312384
NOTRY=true

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=231809

[jln (very slow on Chromium), 2013-10-30 00:08:07]

Paweł: please take a look!

I indeed up just treating it exactly like libresolv: it's not supported by
pkg-config and is a very low level, essential library at run-time anyways.

[Paweł Hajdan Jr., 2013-10-30 00:22:58]

LGTM with a comment

https://codereview.chromium.org/51773002/diff/1/build/linux/system.gyp
File build/linux/system.gyp (right):

https://codereview.chromium.org/51773002/diff/1/build/linux/system.gyp#newcod...
build/linux/system.gyp:887: 'target_name': 'libcap',
nit: Please keep the list of targets sorted alphabetically, move this up to
match sort order.

[jln (very slow on Chromium), 2013-10-30 00:33:34]

https://codereview.chromium.org/51773002/diff/1/build/linux/system.gyp
File build/linux/system.gyp (right):

https://codereview.chromium.org/51773002/diff/1/build/linux/system.gyp#newcod...
build/linux/system.gyp:887: 'target_name': 'libcap',
On 2013/10/30 00:22:58, Paweł Hajdan Jr. wrote:
> nit: Please keep the list of targets sorted alphabetically, move this up to
> match sort order.

Done.

[commit-bot: I haz the power, 2013-10-30 06:12:32]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jln@chromium.org/51773002/80001

[commit-bot: I haz the power, 2013-10-30 10:38:17]

Change committed as 231809