[1.7.10] Fix reobf task missing fields due to incorrect classpath

The reobf task was not handling certain fields because it was missing
the respective classes on its classpath because we removed MC&deps
from the compile configuration.

versions/common.gradle

@@ -164,6 +164,11 @@ if (mcVersion <= 10710) {
             compileClasspath += configurations.minecraft + configurations.minecraftDeps
             runtimeClasspath += configurations.minecraft + configurations.minecraftDeps + configurations.forgeGradleStartClass
         }
+        // Also need to reconfigure the reobf task, so it can properly re-obfuscates inherited members
+        tasks.reobf.obfOutput.all { artifact ->
+            artifact.getFile() // force resolve
+            artifact.classpath += configurations.minecraft + configurations.minecraftDeps
+        }
     }
 }