Revert "change several strcat calls to Q_strlcat calls"
This reverts commit ab879f1bc7.
Revert "change (v)sprintf calls to (v)snprintf calls"
This reverts commit b46e210d76.
Using a float number as version number is a bad idea. Correct this long
standing problem by changing it to a string. If we ever want to compare
version numbers, 2 integer constants "MAJOR_VERSION" and "MINOR_VERSION"
should be added.