As for linux, make bsd-gcc an alias to the solaris semantics for
shared library symbol version handling.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7376)
platforms => { UNIX => 1,
EXPORT_VAR_AS_FUNCTION => 0 } },
linux => 'solaris', # alias
+ "bsd-gcc" => 'solaris', # alias
aix => { writer => \&writer_aix,
sort => sorter_unix(),
platforms => { UNIX => 1,