* JSON parser: Use array for function params (#2255)

* Parser: follow C convention of type before name

* Update struct parser to parse from lines buffer

* Parse struct description

* Fix erroneous comment

* Parse enum descriptions and value descriptions

* Put braces on newline

* Properly escape strings

* Realise that XML doesn't actually need backslash escapes

* Replace FPrintfEscapes with EscapeBackslashes

* Remove #include <stdarg.h>

* Update EscapeBackslashes description