Added a few comments, fixed ortography and some other cosmetic changes.
Merge branch 'master' of https://github.com/szechyjs/dsd.git
Added error correction to the metadata of LDU1 and LDU2.
Refactored implementation of p25p1_ldu1.c and p25p1_ldu2.c. There are less duplicities now and hopefully is easier to read and maintain.
Added a unit test for the Hamming algorithm.
Merge pull request #23 from EdFuentetaja/master

Error correction on the metadata fields of P25 LDU1 and LDU2