Updated boost.m4
This fixes Boost detection with gcc-5.
aMule-specific code has been moved to muleboost.m4, and all changes to boost.m4
has been marked with '*aMule*' to ease further upgrades. These are:
- removed the configure flag --with-boost from BOOST_REQUIRE, we add it ourselves
with a different help text;
- changed AC_DEFUN_ONCE definition of BOOST_REQUIRE to AC_DEFUN, because autoconf
would expand the former at the top level regardless of the place of the macro
call. That would cause some checks being made and a useless warning being
generated even if Boost is not requested (and is unavailable).
36 files changed: