Sm fortressblast powerups

sm_fortressblast_powerups is a ConVar in Fortress Blast which defines the powerups allowed. This ConVar will control the powerups that are dropped in defined places, dropped on death, and chosen by Mystery. It will not affect powerups that are set with sm_setpowerup or sm_spawnpowerup.

The value of the ConVar should be a integer which is the sum of the bit-field of powerups, which are defined as below:

Add the value of these together to get the value you want of this ConVar. Here are some examples:
 * Enable Blast and Gyrocopter: 64 + 16 = 80
 * Enable Frost Touch and Super Bounce: 256 + 1 = 257
 * Enable Mega Mann, Shock Absorber, Super Jump, and Blast: 128 + 2 + 8 + 64 = 202
 * Enable only Time Travel: 32 = 32

To enable all powerups, use -1 to avoid having to update the ConVar every time new powerups are added. Keep in mind Mystery cannot be the only powerup enabled, because it requires at least one other powerup enabled. However, we recommend having at least 4 or 5 other powerups before using Mystery.