[HarfBuzz] building harfbuzz with MinGW

[Werner LEMBERG]

Behdad,


since the introduction of gtk-doc support it's no longer easy to
compile harfbuzz from the git under MinGW.  Any idea to make this work
again?  Ideally, `autogen.sh' should emit a warning if gtkdocize can't
be found, not abort, then disable the creation of documentation.

I've found

  https://github.com/thiagoarrais/console/wiki/How-to-compile-under-Windows

for an alternative, ugly approach, but I hope you can do better :-)


    Werner