RFD: should we do another 2.3-rc for t9001-noxmailer? I'd say not

I was reviewing the recent bugs and fixes for the last time, and was wondering if we want to do 2.3-rc3 with build fix for those with ancient cURL (tc/curl-vernum-output-broken-in-7.11) and workaround for those with Perl with older Getopt::Long (tc/t9001-noxmailer).

 - The former is not a regression between 2.2 and 2.3 (i.e. 2.2
   already had the same use of curl-config output).

 - The latter, strictly speaking, is a regression in that tests used
   to pass but tests in 2.3 no longer pass for those with older
   Getopt::Long.

But the latter is about a test script that lacks work-around, and more importantly, everybody has lived with unconditional X-mailer: output, and the minority with ancient Getopt::Long will survive without being to able to give the new --no-xmailer (or --noxmailer) option just fine.

So currently I am leaning to keep these two fixes where they are and tag 2.3 final without them in a few days.