Explicitly list in which directories to look for config*.m4 files. If some distributor patches a config*.m4 file with quilt, that will place a copy of the original file in .pc/ . Doing a naive "find ." will then cause both the original and the patched m4 file to be included, causing havoc later on. PR: 55787

*) simplify config file list construction (especially the second sed expression). *) comment extensively. *) process into lines which are always guaranteed to sort properly -- don't rely on sort switches or whether "" sorts (numerically) less than "1".

Find all config.m4 files when building generated_lists. Also, convert the sort to use 'sort -n -b'. These arguments are specified by single unix, so they should be portable. This restores the ability to order the config.m4 files. Submitted by: Dale Ghent <daleg@elemental.org>

Get rid of the "-g" on sort. With GNU sort 2.0 (which ships with Mandrake 7.2), the -g makes a difference in the sinclude order (which I assume is an intended difference which I have just broken). With GNU sort 1.2 (which ships with RedHat 6.0), the -g is accepted but is not documented and makes no difference in the result. Thus systems with GNU sort 1.2 were broken before and are still broken with respect to the order of the sinclude statements. With OS/390, Tru64, Solaris, and now I think AIX, -g was not accepted at all by sort so the output of this was broken and Apache would not build.

Finish up the config.m4 file overhaul, so that we can load config.m4 files in order.

The second part of the big autoconf patch, which actually adds autoconf building to the tree.