New features:
* The syscall pass now resolves syscalls for the input target, provided
that an OS is mapped on the ROM region.
* Formalized the variations of print's arguments as a sequence (tree, to
be precise) of /promotions/.
* Added a short notion of Symbol and SymbolTable, and a loader for them.
Data files of type "symbol" are read as such and provide name to
syscalls or arbitrary addresses.
Code changes:
* The disassembly operation of the command-line interface is now finally
in its own file with more room.
* Encoded the tree structure of promotions as a sequence of (mainly
tail-calling) inter-calling methods in the print pass.
* Separate OS and Target conceptually; now an OS is created on an
existing target which must have ROM bound.
* Add a configuration file with a data library and description files
which are automatically loaded at startup.
* As a first application, implement target descriptions. It is now
possible (given the proper library) to type [fxos info fx@3.10] to get
information on the fx OS version 3.10.
* Set up the pass infrastructure and the first few easy passes. This
is still a Work In Progress and not yet called from the command-line.
* Improve the copy/move behavior of classes (C++ concerns).
* Add instruction metadata, which will make it easier to write actual
useful analysis passes.
* switch from File to Buffer to manage file contents
* boilerplate for a proprer command-line interface, and complete help
* add a notion of Addressable to avoid losing the source address of very
information provided by the OS type
* use addressables in the AbstractMemory interface
* fully parse the header and footer of OSes
* bring [fxos info] to the level of the previous implementation
* make most of the OS attributes public
* use char* instead of void* for translation, since void* arithmetic
triggers a hell of warnings in C++
Lephenixnoir