[Trac #1194] install gtk engine in lib/gtk+2.0/$(GTK_VERSION)/engines

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#1194: install gtk engine in lib/gtk+2.0/$(GTK_VERSION)/engines
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 Reporter:  jani    |       Owner:  marco    
     Type:  defect  |      Status:  new      
 Priority:  normal  |   Milestone:  Untriaged
Component:  sugar   |    Keywords:           
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 currently as GTK_VERSION is not defined in ./configure the engine is
 installed under lib/gtk+2.0 unlike other engines. The Makefile already
 uses GTK_VERSION so adding this to configure.in

 GTK_VERSION=`$PKG_CONFIG --variable=gtk_binary_version gtk+-2.0`
 AC_SUBST(GTK_VERSION)

 does it.

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Ticket URL: <http://dev.laptop.org/ticket/1194>
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