The existing iconv.m4 warns against using a serial version, but adding
an empty config.rpath to build-aux/ should make it work just fine.
The new version should work better on various less-popular platforms.
Generated files config.guess config.sub depcomp install-sh ltmain.sh missing
and ylwrap have been moved to build-aux/
Ran autoupdate
Replaced AC_TRY_LINK/AC_TRY_COMPILE by AC_LINK_IFELSE/AC_COMPILE_IFELSE
Droped -I$(top_srcdir)/include from CFLAGS since AC_CONFIG_HEADERS already
adds the -I
Fixed bison detection
Added AM_PROG_AR as required by autoreconf -i -Wall
Updated NEWS and .gitignore