Ignore a GAMEINFO title of 'Supercharge' when syncing

[kenbot]

Addresses #412

• GameInfoSyncAction specially ignores a STARTUPTITLE of "Supercharge"
• Test case confirms
• Cacoward winners "Godless Night" and "Brotherhood of Ruin" both get the correct titles synced now
• The Supercharge gameplay mod itself still syncs with a title of "Supercharge"

[kenbot]

Changes made:

• GameInfoSyncAction will look for the last GAMEINFO-like lump in the wad, rather than the first
• GameInfoSyncAction uses UTF8 encoding instead of UTF7