Add dependencies for the libphonenumber6-dev package.

Add dependencies for the libphonenumber6-dev package.

The dependencies for this package should be those packages that must be
installed in order to compile and link code that uses the library.

R=daniel@pocock.pro
BUG=

Committed: https://code.google.com/p/libphonenumber/source/detail?r=692

[daniel2, 2014-08-27 05:50:43]

On 27/08/14 00:09, roubert@google.com wrote:
> Reviewers: daniel2,
> 
> Description:
> Add dependencies for the libphonenumber6-dev package.
> 
> The dependencies for this package should be those packages that must be
> installed in order to compile and link code that uses the library.
> 

That appears correct

[roubert (google), 2014-08-27 09:21:25]

Committed patchset #1 manually as 692 (presubmit successful).