Added examples/moral.c and examples/extrae.c files, and ACLOCAL_AMFLAGS variable
Added moral.c and extrae.c file program examples
Added extrea_fecha function library
INERE_LOCAL_CHARSET variable added
Example program to test and manipulate the new library function extrae_fecha
Initial import of new library function extrae_fecha
New package function extraefecha added. Exception InereClaveIncompleta added
Added few documentation comments. First steps to avoid not needed messages
Added functionality to deal with non-ascii characters
Now the module can also check R.F.C. codes for personas morales
module function 'completa' added. This function can be used from the input line to verify the spelling of the names at input time