[perl #119945] [PATCH] 4e51d69 Fixed bug where is_core assumed linear release sequence

# New Ticket Created by  Neil Bowers 
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Somewhat embarrassingly my first core module patch had a bug in it: if you specify a minimum version for the module, I traverse through releases, seeing if an acceptable version was released upto and including the specified release of Perl. But I was traversing the sequence of releases as if they were a linear sequence.

This fix now traverse the branch on the release tree leading to the specified version of perl.
An example where this resulted in the wrong behaviour, for Text::Soundex is illustrated in this blog post:

http://neilb.org/2013/09/21/adding-is-core.html

Added tests for this example, and a couple more tests for good measure.

Neil

• [perl #119945] [PATCH] 4e51d69 Fixed bug where is_core assumed linear release sequence by James E Keenan via RT
• Re: [perl #119945] [PATCH] 4e51d69 Fixed bug where is_core assumed linear release sequence by Neil Bowers
• [perl #119945] [PATCH] 4e51d69 Fixed bug where is_core assumed linear release sequence by Neil Bowers
• Re: [perl #119945] [PATCH] 4e51d69 Fixed bug where is_core assumedlinear release sequence by Chris 'BinGOs' Williams