Newline after function-like not preserved

[bbannier]

The formatter currently does not preserve newlines after function-like decls (event, function, hook), e.g.,

event zeek_init() {}
# event zeek_init() {}

is formatted as

event zeek_init()
	{ }# event zeek_init() {}

Formatting the output again leads to more reformatting (new space after #) pointing to an idempotency violation (#26),

event zeek_init()
	{ } # event zeek_init() {}

This makes it hard in code where one needs to selectively comment out blocks of code.