[lmi] "using cross tools not prefixed with host triplet"

[Greg Chicares]

(This may be worth mentioning, although it doesn't seem to cause
any actual problem.)

Which of these is the appropriate name for a cross archiver?
  i686-w64-mingw32-ar
  i686-w64-mingw32-gcc-ar

Running 'install_wx.make' (lmi HEAD--pushed a minute ago) in cygwin, I see:

checking for i686-w64-mingw32-ar... no
checking for ar... ar
configure: WARNING: using cross tools not prefixed with host triplet

Here's what MinGW-w64 provides ({prefix}-gcc-ar, {prefix}-gcc-nm...):

$ls /MinGW_/bin/i686-w64-mingw32*
/MinGW_/bin/i686-w64-mingw32-c++.exe
/MinGW_/bin/i686-w64-mingw32-g++.exe
/MinGW_/bin/i686-w64-mingw32-gcc-4.9.1.exe
/MinGW_/bin/i686-w64-mingw32-gcc-ar.exe
/MinGW_/bin/i686-w64-mingw32-gcc-nm.exe
/MinGW_/bin/i686-w64-mingw32-gcc-ranlib.exe
/MinGW_/bin/i686-w64-mingw32-gcc.exe
/MinGW_/bin/i686-w64-mingw32-gfortran.exe

BTW, wxPdfDoc's configure script reports:

checking for i686-w64-mingw32-ranlib... no
checking for ranlib... ranlib
configure: WARNING: using cross tools not prefixed with host triplet