too many dependencies, things get cluttered (and merging probably
gets problematic). Now new config will be "conf2".

Conflicts:
	ChangeLog
	configure.ac
	doc/manual.html
	plugins/omlibdbi/omlibdbi.c
	tests/Makefile.am
	tests/diag.sh

The capability has been added for module to specify that they do not
like being unloaded.
related bug tracker: http://bugzilla.adiscon.com/show_bug.cgi?id=222

Signed-off-by: Rainer Gerhards <rgerhards@adiscon.com>

config variables were not properly initialized

The output interface has been changed, but we do not yet utilize the
new interface. Also, it looks like a regression was introduced. But before
hunting it down, I'd like to make a commit (what also easys the regresion
hunt).

support for enhancing probability of memory addressing failure by
using non-NULL default value for malloced memory (optional, only if
requested by configure option). This helps to track down some
otherwise undetected issues within the testbench and is expected
to be very useful in the future.

... by moving code to stream.c. Thanks to the new design, new cases are
not really needed, resulting in cleaner code.

I also did a cleanup of header file usage as a side-activity.

pkg-config uses uppercase for its _CFLAGS and _LIBS variable names.
So we follow suit and convert all _cflags and _libs variables to
uppercase for more consistency.