Code guidelines

I hate code guidelines. Especially when they tell to use tabs instead of spaces, or put { on separate lines, or similar nonsense. But code must be consistent, so please try to following this very small set of rules/recommendations, when contributing to deadbeef.

• Follow the existing style of a file as possible
• 4 spaces for indentation (mandatory)
• Prefer the opening { on the same line, e.g. void my_function (void) {
• Use (void) instead of empty argument list
• Space before ( is better than no space, including functions, e.g. int main (void)
• Don't do this ( void )
• Position the star correctly in pointers, e.g. int *value;
• No trailing line-breaks