Bug#856274: gnat-BV: gnatchop attempts to execute missing *-gcc-BV-BV

[Nicolas Boulenguez <nicolas@debian.org>]

Package: gnat-5,gnat-6,gnat-7
Followup-For: Bug #856274
Control: retitle -1 gnat-BV: gnatchop fails to execute (ARCH-)?gcc-BV-BV
Control: affects -1 libgtkada

Work-around: Build-Depend (or rebuild with): gnat-5 (>= 5.4.1-11)
         or  Build-Depend (or rebuild with): gnat-6 (>= 6.3.0-18)
         or (Build-Depend (or rebuild with): gnat-6 (>= 7.1.0-9)
             and call "/usr/bin/gnatchop" instead of "gnatchop"
            ).

For example, libgtkada/3.8.3-1 FTBFS on sh4 with gnat-6/6.3.0-2, but a
binary rebuild in due time with latest gnat-6 should be sufficient.