[MacPorts] #41007: textmate2: add missing Mavericks build dependency on gnutar

[MacPorts]

#41007: textmate2: add missing Mavericks build dependency on gnutar
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 Reporter:  aronnax@…  |      Owner:  macports-tickets@…
     Type:  defect     |     Status:  new
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:  2.2.0
 Keywords:             |       Port:  textmate2
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 textmate2 uses gnutar during its build phase. See attached log and this
 relevant excerpt:

 {{{
 Downloading ‘https://api.textmate.org/bundles/default’…
 scandir("/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_editors_textmate2/textmate2/work/.tmp/bundles.BxQNEicm/Managed/Bundles"):
 No such file or directory
 Downloading... Done!
 bin/create_default_bundles_tbz: line 20: gnutar: command not found
 }}}

 This patch adds gnutar as a build dependency to address MavericksProblems.

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Ticket URL: <https://trac.macports.org/ticket/41007>
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