[phobos] v2.053 tag

[Jonathan M Davis]

druntime and Phobos both have a v2.053 tag as well as the druntime-2.053 and 
phobos-2.053 respectively. The latter two follow the naming scheme that we've 
been using for tags. So, I believe that they are the correct tag names. That 
being the case, is there any reason to keep the v2.053 tags around? As far as 
I can tell, they're identical to the X-2.053 tags, and having two 2.053 
versions tagged is going to be confusing. Would it be a problem if I just 
deleted the v2.053 tags?

- Jonathan M Davis