Improved exceptions

Many exceptions got an improvement due to changed class or description or details it is providing.
Is not complete, needs to be done in patches in the regions, where it is needed, since some are just
swallowed.

Removed total usage of pure RuntimeExceptions to 0.

src/main/java/appeng/fmp/PartRegistry.java

@@ -54,7 +54,8 @@ public enum PartRegistry
 				return pr.name;
 			}
 		}
-		throw new RuntimeException( "Invalid PartName" );
+
+		throw new IllegalStateException( "Invalid PartName" );
 	}
 
 	public static TMultiPart getPartByBlock( Block block, int meta )
@@ -80,7 +81,7 @@ public enum PartRegistry
 		}
 		catch( Throwable t )
 		{
-			throw new RuntimeException( t );
+			throw new IllegalStateException( t );
 		}
 	}