makes: Build result output string and export to BUILD_RESULT
makes: Build result output string and export to BUILD_RESULT

Change-Id: I9928065020adf783bff905ae8fbd9a47f2d0cdaf
Signed-off-by: Adrian DC <01fb3892f39957945220431e7409156544d2f041@gmail.com>

AdrianDC/android_development_shell_tools,AdrianDC/android_development_shell_tools