[MacPorts] #18362: Add djvu driver to ghostscript

[MacPorts]

#18362: Add djvu driver to ghostscript
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 Reporter:  andrea.damore@…             |       Owner:  takanori@…           
     Type:  enhancement                 |      Status:  new                  
 Priority:  Normal                      |   Milestone:  Port Enhancements    
Component:  ports                       |     Version:  1.7.0                
 Keywords:  ghostscript gsdjvu          |        Port:  ghostscript          
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 The gs driver for djvu allows the use of djvudigital to convert from pdf
 to djvu.
 There is a small package prepared from people at
 [http://djvu.sourceforge.net/gsdjvu.html djvulibre] that needs some
 special attention to license.

 The script contained in their tarball get ghostscript tarball, remove
 everything but the gs driver, patch it and build it.

 I suggest to just add the gs driver as a variant for ghostscript rather
 than having a separate gs binary, so far I've been able to build the
 gsdjvu using the latest ghostcript in port, that is 8.63 .

 I'm waiting for feedback from takanori.

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Ticket URL: <http://trac.macports.org/ticket/18362>
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