It turns out there are shockingly few cases of manifestparser manifests that actually use the ';'
character as a comment. Because we will soon allow inline comments, deprecating the use of ';' will
ensure that values are allowed to have semicolons in them.
Even without inline comments, might as well enforce consistency across manifests.
MozReview-Commit-ID: AEPPQFdNXG0
I looked through the NSPR socket creation functions that InitWithAddress
uses to see which errors they could return, and placed appropriate comments
in ErrorAccordingToNSPR.
The test coverage is not great; in particular, I wasn't able to find a way
to elicit "address in use" errors from Windows (although I could from
Linux); the web says that Windows is much more relaxed about binding
listening sockets than Unix derivatives. I'm interested in suggestions.
