make more libsyntax methods public#51664

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bors merged 1 commit intorust-lang:masterfrom

jebrosen:pub_parse_methods2

Jun 22, 2018

Commits on Jun 20, 2018

make `parse_seq_to_before_end`, `mk_mac_expr`, and `parse_optional_str` public in libsyntax
jebrosen
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