Civilization IV v1.74 patch

This v1.74 patch for Civilization IV makes various gameplay, crash, and bug fixes.

Patch details:

# Cossack gets only 25% bonus versus mounted
# Can no longer upgrade Marines and SAM Infantry to Mech Infantry
# Fixed MP Retire crash
# MP - Can no longer bypass the delay timer
# Pitboss fix for the bug where you would not get the free tech from the Oracle if you were not online
# Fixed forced specialist bug