Protect against multiple inclusion.
Add fix for broken prfpregset_t here.
(struct ps_prochandle): Declare here.
[HAVE_PROC_SERVICE_H]: Include <proc_service.h>.
[!HAVE_PROC_SERVICE_H]: Include "gregset.h", define prgregset_t
and prfpregset_t in terms of gdb_gregset_t and gdb_fpregset_t if
necessary.
* lin-thread.c: Unconditionally include "gdb_proc_service.h".
Remove fix for broken prfpregset_t here.
(struct ps_prochandle): Don't declare here.
* configure.in: Check for lwpid_t, psaddr_t, prgregset_t and
prfpregset_t in <sys/procfs.h>.
* config.in: Add HAVE_LWPID_T, HAVE_PSADDR_T, HAVE_PRGREGSET_T,
HAVE_PRFPREGSET_T.
* gdb_proc_service.h: Only provide typedefs for lwpid_t, psaddr_t,
prgregset_t and prfpregset_t if they are not already present.
