pattern.
* gdb.threads/tls-shared.exp: Don't use gdb_suppress_entire_file.
* gdb.threads/tls.exp: Recognize one case of the host library not
supporting TLS.
* gdb.threads/tls.c : New file.
* gdb.threads/tls.exp : New file.
* gdb.threads/tls-main.c : New file.
* gdb.threads/tls-shared.c : New file.
* gdb.threads/tls-shared.exp : New file.