(1) Added subroutine taskadmin to serve as "lio's main".

     (2) Retouching lio_init; together with a different version
         of a "lio_finalize" (to be renamed probably) these should
         be called to start and end the program and, together with
         taskadmin, will probably be the only subroutines to be called
         directly by the program using liolib. Initialization of
         variables that change in each call to the program whould
         be dealt with inside the taskadmin; lio_init and "lio_finalize"
         (not the existing one, the planned one) should be called only once.

     (3) Moved "mods" to "liomods" and started a mod for keywords
         (liokwrds). This way "mods" is free to be used a folder
         to store the .mod files (insted of just leaving them in
         the main directory).

Squashed commit of the following:

commit ca26a7cd1528229f374f5b91108ab93a0a32ee09
Merge: a4054f0 1d45881
Author: Francisco <francisco@eneas.(none)>
Date:   Tue Dec 9 14:51:38 2014 -0300

commit a4054f0dd44bdc4130ab66a6661e08baacb173ee
Author: Francisco <francisco@eneas.(none)>
Date:   Tue Dec 9 14:35:45 2014 -0300

commit 69ff44c7956be9c458f676588a1529c828cffada
Merge: a69d892 38316c8
Author: Francisco <francisco@eneas.(none)>
Date:   Fri Dec 5 12:20:49 2014 -0300

commit a69d892f8c73baeacb768dc52669d77496bb5e4f
Author: Francisco <francisco@eneas.(none)>
Date:   Fri Dec 5 12:18:22 2014 -0300

&OLDER