Borderlands PC Update Patch 1.30

This patch updates Borderlands to version 1.30, and contains a long list of fixes, changes, and balance adjustments. The complete list can be found in the extended description.
Addressed issues: * Invalid weapons or items can no longer be loaded into the game * Brick's Centurion class mods now regenerate health correctly * Brick's Bombardier class mods now regenerate rockets correctly * Roland's Tactic