process.exit doesn't work in the browser.

This causes some tests to time out instead of kill seneca.

the [process shim](https://www.npmjs.com/package/process) only exists to provide the
nextTick method.

the ultimate reason is still
rjrodger/use-plugin#4

Author: AdrianRossouw

seneca.js

@@ -2123,8 +2123,10 @@ function makedie( instance, ctxt ) {
                 if( err ) console_error( err );
                 console_error( stderrmsg )
                 console_error("\n\nSENECA TERMINATED at "+(new Date().toISOString())+
-                              ". See above for error report.\n\n")
-                process.exit(1)
+                  ". See above for error report.\n\n")
+
+                // can not exit in the browser
+                //process.exit(1)
               })
             }
           }
@@ -2137,7 +2139,8 @@ function makedie( instance, ctxt ) {
           console_error( stderrmsg )
           console_error("\n\nSENECA TERMINATED (on timeout) at "+(new Date().toISOString())+
                         ".\n\n")
-          process.exit(2);
+          // can not exit in the browser
+          //process.exit(2);
         }, so.deathdelay);
         killtimer.unref();
       }