Repaired gdi03 mission. Fixes #5210.

I opted to lower the power consumption for SAM instead of restoring the
original power values for FACT and PROC since those two are available to
the player as well and they would behave slightly different in this
mission than in other ones.
Merge pull request #5223 from obrakmann/fix5210

Repaired gdi03 mission. Fixes #5210.