adb errors being ignored

[markrcote]

As reported in the last issue, somehow the runbrowserprofile.sh script became inaccessible; however, autophone never noticed the error:

$ adb -s 0A3A8EB60D02201D shell sh /data/data/com.mozilla.SUTAgentAndroid/files/tests/autophone/runbrowserprofile.sh org.mozilla.fennec/.App /data/data/com.mozilla.SUTAgentAndroid/files/tests/autophone/profile file://mnt/sdcard/s1test/startup6.html
sh: Can't open /data/data/com.mozilla.SUTAgentAndroid/files/tests/autophone/runbrowserprofile.sh

AutoPhone should be checking the results of the adb command to verify that it worked. We probably need an ERROR or DISABLED state as well.

[markrcote]

Important commands are now being checked for errors.