All our products from the Map makers is now Apache 2! Neeeaatt.
make it so it is impossible to enable gdal+tiff and tiff at the same time. in that case, link order determines the called functions. there's no way that's a good idea
This should work back to automake-1.6/autoconf-2.59. _AS_ECHO_LOG is internal and I shouldn't have used it anyway, and AS_IF doesn't become n-ary until later. m4_foreach_w also doesn't exist until later. also, old automake didn't like the way the geometry test ifs were structured automake-1.6 can't handle a macro as the first arg of AM_CONDITIONAL
It's not used yet, but seems handy.