* gdbarch.sh (memory_insert_breakpoint, memory_remove_breakpoint): Add
gdbarch as parameter.
* gdbarch.{c,h}: Regenerate.
* ppc-tdep.h (ppc_linux_memory_remove_breakpoint): Add gdbarch as
parameter.
* mem-break.c (default_memory_insert_breakpoint)
(default_memory_remove_breakpoint): Likewise.
* target.h (default_memory_remove_breakpoint)
(default_memory_insert_breakpoint): Likewise.
* ppc-linux-tdep.c (ppc_linux_memory_remove_breakpoint): Add gdbarch as
parameter. Replace current_gdbarch by gdbarch.
* m32r-tdep.c (m32r_memory_insert_breakpoint)
(m32r_memory_remove_breakpoint): Likewise.