Escape single quotes in arguments.

Verified that these use-cases continue working:

$ adb shell arg a a 'b b'
$ adb shell arg a a "b b"
|arg|a|a|b b|

$ adb shell arg "a a 'b b'"
|arg|a a 'b b'|

$ adb shell arg 'a a "b b"'
|arg|a a "b b"|

$ adb shell arg a\"b\'c
|arg|a"b'c|

$ adb shell "arg a && arg b"
|arg|a|
|arg|b|

$ adb shell "arg 'a' \"b\" c"
|arg|a|b|c|

Bug: 16139781
Change-Id: I3b010b6cdf57281695c11fda318c9bea0a7221cc