lint: don't catch Exception, catch RuntimeException or checked exception.

omits SAM, BOB, reflection, commented-out code, and a few other places

installer/java/src/net/i2p/installer/Exec.java

@@ -21,7 +21,7 @@ public class Exec {
             try { proc.exitValue(); } catch (Throwable t) { }
             Runtime.getRuntime().halt(0);
 
-        } catch (Exception e) {
+        } catch (RuntimeException e) {
             e.printStackTrace();
         }
     }