Code clean up part 2
Code clean up part 2

- avoid using escaped double quotes where possible
- use "+=" where possible
- remove "useless use of cat"
- "awk" statement refactoring
- replace 'echo ""' with 'echo'

jobscale/apt-cyg,ilatypov/apt-cyg,balanx/apt-cyg,transcode-open/apt-cyg