message: Stables expire with Power Projection
diff: <Strategy>TXT_KEY_BUILDING_STABLE_STRATEGY</Strategy>
  <Advisor>ADVISOR_MILITARY</Advisor>
  <ArtDefineTag>ART_DEF_BUILDING_STABLE</ArtDefineTag>
  - <ObsoleteTech>TECH_ENGINE</ObsoleteTech>
  + <ObsoleteTech>TECH_POWER_PROJECTION</ObsoleteTech>
  <PrereqTech>TECH_RIDING</PrereqTech>
  <bNeverCapture>1</bNeverCapture>
  <iCost>60</iCost>
  <Strategy>TXT_KEY_BUILDING_MONGOLIAN_GER_STRATEGY</Strategy>
  <Advisor>ADVISOR_MILITARY</Advisor>
  <ArtDefineTag>ART_DEF_BUILDING_MONGOLIAN_GER</ArtDefineTag>
  - <ObsoleteTech>TECH_ENGINE</ObsoleteTech>
  + <ObsoleteTech>TECH_POWER_PROJECTION</ObsoleteTech>
  <PrereqTech>TECH_RIDING</PrereqTech>
  <bNeverCapture>1</bNeverCapture>
  <iCost>60</iCost>
  