Update curl to depend on openssl and also update package to latest versi...

...on

this PR basically enables ssl, and thus allows things like git to use https (via lib curl)
I know you already merged this, but it cannot work. You need to update the hash. For the record, here are the respective hashes:
```
ondrej@eagle:/tmp$ hit fetch http://curl.haxx.se/download/curl-7.33.0.tar.gz
Downloading http://curl.haxx.se/download/curl-7.33.0.tar.gz...
Downloading 'http://curl.haxx.se/download/curl-7.33.0.tar.gz'
[=========================] 100.0% (3.3MB of 3.3MB) 1.275MB/s ETA 0s  

sources:
- url: http://curl.haxx.se/download/curl-7.33.0.tar.gz
  key: tar.gz:oriktrzl2j65rhogtfvovwxtkt5etpb4
ondrej@eagle:/tmp$ hit fetch http://curl.haxx.se/download/curl-7.37.0.tar.gz
Downloading http://curl.haxx.se/download/curl-7.37.0.tar.gz...
Downloading 'http://curl.haxx.se/download/curl-7.37.0.tar.gz'
[=========================] 100.0% (3.5MB of 3.5MB) 1.254MB/s ETA 0s  

sources:
- url: http://curl.haxx.se/download/curl-7.37.0.tar.gz
  key: tar.gz:dl6tespqw6zufuqodtfmxpasggdziyrs
```