[MacPorts] #49359: tdom: fix build failure with tcl 8.6

[MacPorts]

#49359: tdom: fix build failure with tcl 8.6
------------------------+---------------------------------
  Reporter:  neumann@…  |      Owner:  ryandesign@…
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.3.4
Resolution:             |   Keywords:  haspatch maintainer
      Port:  tdom       |
------------------------+---------------------------------

Comment (by neumann@…):

 Oops. The problem was, that "port clean tdom" and "port unsinstall tdom"
 did not remove "/opt/local/var/macports/distfiles/tDOM/tDOM-0.8.3.tgz" and
 "/opt/local/var/macports//software/tDOM/tDOM-0.8.3_2.darwin_14.x86_64.tgz"
 on my installation, so the githup options were ignored, and the old .tgz
 files were used in the builds.

 I gave a try to the github portgroup, but was not very successful:

 Attempt a)
 {{{
 github.setup    tDOM tdom 0.8.3
 github.tarball_from downloads
 }}}
 the leads to
 {{{
 :notice:fetch --->  Attempting to fetch tdom-0.8.3.tgz from
 https://github.com/downloads/tDOM/tdom
 :debug:fetch Fetching distfile failed: SSL peer handshake failed, the
 server most likely requires a client certificate to connect
 }}}

 Attempt b)
 {{{
 github.setup    tDOM tdom tdom_0_8_3_postrelease
 github.homepage https://api.github.com/repos/tDOM/tdom
 github.tarball_from tags
 }}}
 the leads to
 {{{
 :notice:fetch --->  Attempting to fetch tdom-tdom_0_8_3_postrelease.tar.gz
 from https://api.github.com/repos/tDOM/tdom/tarball/tdom_0_8_3_postrelease
 :debug:fetch Fetching distfile failed: The requested URL returned error:
 404 Not Found
 }}}
 where a cut&paste of the same url works perfectly with wget. I had to
 provide the github.homepage path, otherwise the generated path from the
 portgroup was substantilally wrong (i.e. not confirming to the documented
 API of https://developer.github.com/v3/repos/contents/#get-archive-link)

 Shouldn't we stick with the old-fashioned working way (first patch)?

-- 
Ticket URL: <https://trac.macports.org/ticket/49359#comment:7>
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