Mods: Use constructor init list instead of assignments
Loot: copy constructor should check for self assignment.

cppcheck said:
[src/Loot.cpp:47]: (warning) 'operator=' should check for
assignment to self to avoid problems with dynamic memory.

Well, after some short search on the web, it seems to be a valid point
http://www.geeksforgeeks.org/g-fact-38/
Move manpage to section 6

This should fix #962
Merge pull request #964 from hean01/master

Swedish translation and a small fix
Add a script to generate the source releases
Merge pull request #963 from stefanbeller/master

Fix manpage; small fixups
Merge pull request #965 from stefanbeller/releasescript

Add a script to generate the source releases
Warn about unknown item attributes in item database
Update swedish translation.
Fix Issue #859
Updates to swedish translation.
Merge pull request #966 from stefanbeller/warn

Warn about unknown item attributes in item database