nodes.
* ldlang.h (lang_new_vers_pattern): Add literal_p parameter.
* ldgram.y (vers_defns): Allow NAME as well as VERS_IDENTIFIER.
Adjust calls to lang_new_vers_pattern to pass literal_p argument.
* ldlang.c (lang_vers_match): Fix indentation. Do not glob-match
version nodes without a pattern.
(lang_new_vers_pattern): Add literal_p parameter.
(lang_do_version_exports_section): Pass it.
* ld-elfvers/vers.exp: Add vers31.
* ld-elfvers/vers31.c: New file.
* ld-elfvers/vers31.dsym: Likewise.
* ld-elfvers/vers31.map: Likewise.
* ld-elfvers/vers31.ver: Likewise.
