* Fix following warnings:
* case statement without a default case
* double quoted string containing no variables
* indentation of => is not properly aligned
* mode should be represented as a 4 digit octal value or symbolic mode
* quoted boolean value found
* unquoted file mode
* variable not enclosed in {}
* Fix following errors:
* trailing whitespace found
* two-space soft tabs not used
* Remove quotes around class in include/require statements
Change-Id: Ia407416e51c09fb303675863afa68f526a37abcf
394e614ab2