update to newest autoconf/automake/autoheader

[Holger S. <h.s...@mn...>]

Hi all !

I have a bunch of updates to make blob-cvs work with the newest 
autoconf/autoheader/automake.

E.g. I'm fixing in som files:

* += to =
* CFLAGS to programname_CFLAGS
* AC_DEFINE(x) to AC_DEFINE(x,val,"Desc") so that we can get rid of acconfig.h


Should I commit this?