[Varnish] #1189: configure script didn't check rst2man binary

[Varnish]

#1189: configure script didn't check rst2man binary
--------------------------+--------------------
 Reporter:  JonathanHuot  |       Type:  defect
   Status:  new           |   Priority:  low
Milestone:                |  Component:  build
  Version:  trunk         |   Severity:  minor
 Keywords:                |
--------------------------+--------------------
 '''Steps to reproduce:'''
 * uninstall python-docutils package or rst2man binary
 * clone varnish sources
 * launch ./configure
 * launch make

 '''Results :'''
 Make failed with the error below:
 {{{
 make[3]: Entering directory `/home/jo/git/varnish/lib/libvmod_std'
 ========================================
 You need rst2man installed to make dist
 ========================================
 make[3]: *** [vmod_std.3] Error 1
 }}}
 The correct behavior is to check if rst2man binary (or python-docutils
 package) is installed in configure script.

-- 
Ticket URL: <https://www.varnish-cache.org/trac/ticket/1189>
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