Parse next paragraph out of *pcomment. Update *pcomment to point past paragraph. Returns NULL if no more paragraphs. If paragraph ends in 'identifier:', then (*pcomment)[0 .. idlen] is the identifier.
Parse escapes of the form: /c/string/ where c is a single character. Multiple escapes can be separated by whitespace and/or commas.
Parse macros out of Macros: section. Macros are of the form: name1 = value1