cleanup, don't escape newline
style, fix indentations
style, remove all trailing white spaces from source files

used command: sed -i 's/[\t ]*$//g' src/*.cpp src/*.h
style, remove trailing white spaces from other files

used command: sed -i 's/[\t ]*$//g' $(git ls-files)
style, remove some empty lines
style, format Makefile.am comments
Merge branch 'style'

* style:
  style, format Makefile.am comments
  style, remove some empty lines
  style, remove trailing white spaces from other files
  style, remove all trailing white spaces from source files
  style, fix indentations
  cleanup, don't escape newline