Completed initial implementation of MD5.
Added MD5 stuff to Makefile.
Fixed casing bug in md5.c.
Added MD5 test to mac test file.
Fixed bug when expanding the DB_INT_ADD macro.
Converted bitlen to a proper unsigned int64 data type.
Finished converting integer types to use types defined in <stdint.h>
Converted the public update function to memcpy rather than byte copy.
Unrolled the hash copying loop.
Converted the final hash method to use memset instead.
Documentation update.
Documentation updates.

* Added method documentation.
* Renamed the fields of the MD5_Context structure.
* Reordered the functions alphabeticaly.
Merge branch 'develop' into feature/hash
Added MD4 implementation.
Added MD4 test hash function.
Changed MD4 to use a typedef struct, since the other way wasn’t working.
Documentation.
Added quick and dirty ed2k test.
Updated MD5 implementation.
Bringing develop changes to feature/hashcore.