pkg/48527: xdvik build fails on case-insensitive filesystem

[jruschme%gmail.com@localhost]

>Number:         48527
>Category:       pkg
>Synopsis:       xdvik build fails on case-insensitive filesystem
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jan 16 20:55:00 +0000 2014
>Originator:     John Ruschmeyer
>Release:        pkgsrc-2013Q4
>Organization:
EOIR Technologies
>Environment:
arwin JR-M4400.local 13.0.0 Darwin Kernel Version 13.0.0: Thu Sep 19 22:22:27 
PDT 2013; root:xnu-2422.1.72~6/RELEASE_X86_64 x86_6
>Description:
xdvik package attempts to create directory 
usr/pkgsrc/print/xdvik/work/texlive-20130530-source/texk/xdvik/texmf/xdvi

This fails because there is already a file named "XDvi" in the parent directory 
and we are on a system with a case-insensitive filesystem.
>How-To-Repeat:
Attempt to build xdvik on a normal OS X install.
>Fix: