bump version to 1.20.2

Apply patches from http://busybox.net/downloads/fixes-1.20.1/
+ some others fixes from master branch related to android

Add also the inetd applet (basic, without librpc support)
only include sample features set in examples/inetd.conf

Change-Id: I60c978eef4556a5baec8d5240df7738dcfe268aa
15 files changed