[MacPorts] #29609: Update hgsubversion to version 1.2.1

[MacPorts]

#29609: Update hgsubversion to version 1.2.1
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 Reporter:  wolfgang.lux@…          |       Owner:  akitada@…           
     Type:  update                  |      Status:  new                 
 Priority:  Normal                  |   Milestone:                      
Component:  ports                   |     Version:                      
 Keywords:  haspatch                |        Port:  py26-hgsubversion   
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Comment(by macports.org@…):

 This is sorely needed: hgsubversion 1.1.2 has a severe memory leak (which
 does not exist anymore in 1.2.1 as far as I can tell, though I do not know
 when it's been fixed) which makes it very hard to use for big
 repositories, as memory grow into the gigabytes (and freezes the process,
 due to the GC I guess) after a few hours of it running.

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Ticket URL: <https://trac.macports.org/ticket/29609#comment:2>
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