GNU M4 is a prerequisite to run autoconf and automake.
This patch packages the macro processor.
This is a prerequisite for packaging autoconf and automake.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
[Fixed commit summary according to our best-practise]
Signed-off-by: Michael Heimpold <mhei@heimpold.de>
