GXemul Code2

Updating the TODO.

CPUComponent's unassemble method now remembers where it last
unassembled, and starts at m_pc if it is the first time it
is executed.

GTKMM GUI test: Connecting to the "activate" signal of a text
entry, so that commands are executed once ENTER is pressed;
this does not work with tab-completion and command line
editing though, since only ENTER is signaled.

Implementing support in the CommandInterpreter for running
methods on components. If a component name is "executed" with
no method name given, the component tree is dumped. (This means
that there is no need for the 'tree' command anymore, so it
has been removed.)

Implementing the first component method: "unassemble" for the
CPUComponent.

Translating some more strings into Swedish.

Beginning on internal support for instruction disassembly (not user-accessible yet).
Importing some MIPS defines from GXemul 0.4.6.3.

Spelling fix: emulte -> emulate.

Importing opcodes_mips.h from GXemul 0.4.6.3.

Links are now generated from component names in machines.html
to corresponding component_xxx.html pages.

The ListComponents command now shows the short description of each command.