Fix MaskAddresses to support AOSP toybox sed

In MaskAddresses sed is used to preprocess traces.
In AOSP switching to use a toybox sed instead of GNU sed for build tools was done.
Command line options and regular expressions for GNU sed don't work for the
toybox sed causing test failures:
1. Toybox sed does not support '--in-place --regexp-extended'.
2. Toybox sed does not support hexadecimal expressions.

The CL changes MaskAddresses to work with toybox sed:
1. Use '-i -E' instead of '--in-place --regexp-extended' because they
have the same meaning. GNU sed also supports '-i -E' instead of
'--in-place --regexp-extended'.
2. Encode the ESC character directly in the source.

As the CL makes some macros redundant the macros are removed.

Change-Id: I072e59ed765adff574c8890eb8610799602a1b78