The rework of the host tools discovery caused autoconf to embed
absolute paths to staging_dir/host/bin/perl into the shebang
of the generated autoconfig executables.
Switch to the portable "/usr/bin/env perl" and enable global
warnings through "$^W" instead of the "-w" interpreter argument.
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
SVN-Revision: 44971
