memory handling patch

[Bernhard Reiter]

Hi friends of statist,

There is a new patch for statist which you should try.
For easy of downloading I have put it in the contrib directory, 
though I did it myself. :)

	http://www.usf.uos.de/~breiter/tools/statist/v1.0.0/contrib/

Thanks to the efforts of Masao KAWAMURA <kawamura at mlb.co.jp>
and his patch I found a couple of memory handling problems probably
still originating from Dirk. :)
Tried to make memory handling more consistant, 
this should fix some problems.

Everybody should test this patch and the other ones if you get a
chance because I plan to release it as the next stable version of statist.
It needs some testing because memory handling is always critical.

Here is the changelog to the patch:

* cleanup: removed alread inactived myfopen() from the code completly
* cleanup: grouped memory functions in statist.c and added short describtions
* cleanup: simplified free_ptr() to use the global int n_ptr
* fix: reworked memory handling, only the functions mycalloc, myalloc 
	and myfree() are used now. A couple of free()s where too much.
        Thanks to KAWAMURA Masao <kawamura at mlb.co.jp> and his patch
        for pointing me to the problem.
* note: in funcs.c, mycalloc() and myfree() are used to get a
        huge bunch of memory in get_cross_validate() and
        get_multiple_reg(), usually m_calloc() would be used
        and limiting the number of temp variables allocated...


Bernhard

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