by default current prefix is also searched
allow to specify libb2 location, by using --with-bz2-prefix,
by default current prefix is also searched
locating gmp and bz2 works by default on OpenBSD (bb #301)
move local m4 macros to m4/
import lib-link.m4 and dependent files
quoting for autoconf macros (bb #452)
git-svn: trunk@3566
Markus Elfring <Markus.Elfring*web.de> in bb #452)
* use AC_CONFIG_HEADER, since AM_CONFIG_HEADER is obsolete
* put configure files into auxiliary directory
* fix main declaration in FD_SETSIZE test
* check for failure on fopen in FD_SETSIZE test
* move version from AM_INIT_AUTOMAKE to AC_INIT, old form was obsolete
* eliminate automake warnings, update Makefile.am
* rename .splitted to .split (requested by aCaB)
git-svn: trunk@3563
