Don't create cocaine user if one already exists
Backport of #113 from master.
Version bump
Merge pull request #115 from realloc/v0.11

Don't create cocaine user if one already exists
Merge pull request #118 from noxiouz/backport_of_more_talkative_locator

Backport of more talkative locator
Fix compatibility with clang build using libstdc++.
Merge pull request #122 from 3Hren/v0.11

Fix compatibility with clang build using libstdc++.
backport locator.hostname config option to v0.11 branch
Merge pull request #124 from diunko/feature/hostname-option

Backport locator.hostname config option to v0.11 branch
[Bug Fix] Properly check platform macro definition.

This commit should fix #126.
Merge pull request #127 from 3Hren/v0.11

[Bug Fix] Properly check platform macro definition.
Resolve Issue #125.
Fixed bug in the locator's refresh method.

The refresh method doesn't update entries in the inverted index which correspond to the deleted from the routing group applications.
So when one of the applications disappears from the cloud, locator zeroes its weight in the group by an integer index, and actually it zeroes weight of some other application which actually corresponds to this integer index.
Bump version - 0.11.2.10.
Merge pull request #131 from andrusha97/v0.11

Fixed bug in the locator's refresh method
[Logging] Implemented reopen method for file logger service.

This commit introduces special service, which uses file logger under the hood. It extends logger interface and provides `reopen` method for reopening logger's underlying file descriptor.

This is workaround for COCAINE-282.

An example config for `services` section:
```
"filelogger": {
    "type": "filelogger",
    "args": {
        "name": "some_name"
    }
}
```
Version bump.
Prettifying and wording.
Merge pull request #132 from 3Hren/v0.11

 Implemented reopen method for file logger service.