libcouchbase 2.4.2

```
mnunberg@csure:/tmp$ wget packages.couchbase.com/clients/c/libcouchbase-2.4.2.tar.gz
--2014-09-24 09:18:15--  http://packages.couchbase.com/clients/c/libcouchbase-2.4.2.tar.gz
Resolving packages.couchbase.com (packages.couchbase.com)... 54.231.244.0
Connecting to packages.couchbase.com (packages.couchbase.com)|54.231.244.0|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1039321 (1015K) [application/x-gzip]
Saving to: `libcouchbase-2.4.2.tar.gz'

100%[==========================================================================>] 1,039,321   1.80M/s   in 0.6s    

2014-09-24 09:18:15 (1.80 MB/s) - `libcouchbase-2.4.2.tar.gz' saved [1039321/1039321]

mnunberg@csure:/tmp$ sha1sum libcouchbase-2.4.2.tar.gz 
671ec846d69cb1c703c20c055c4f2daa91ae6a2e  libcouchbase-2.4.2.tar.gz
```