(gdb-registers-font-lock-keywords): New font lock keywords definition.
(gdb-registers-mode): Use `gdb-registers-font-lock-keywords'.
(gdb-memory-font-lock-keywords): New font lock keywords definition.
(gdb-memory-mode): Use `gdb-memory-font-lock-keywords'.
(gdb-local-font-lock-keywords): New font lock keywords definition.
(gdb-registers-font-lock-keywords): New font lock keywords definition.
(gdb-registers-mode): Use `gdb-registers-font-lock-keywords'.
(gdb-memory-font-lock-keywords): New font lock keywords definition.
(gdb-memory-mode): Use `gdb-memory-font-lock-keywords'.
(gdb-local-font-lock-keywords): New font lock keywords definition.