* Replace `int` with `s32` as return type for syscalls.
* Renamed `SC_Something.*` files with the proper lv2 name
`sys_something.*`.
* Moving away from the lv2, those functions and folders that doesn't
correspond to lv2 functions. E.g. module functions from sys_io,
sysPrxForUser, cellGcmSys.
* Splitted some files (memory -> memory+mmapper) and merged other ones
(event+event_flag ->event, spu+spu_thread -> spu), according to common
sense, PSDevWiki docs, and checking firmware files.
* Removed external functions from `SysCalls.h`.
NOTE: What should we do about: cellGcmCallback? It's not a lv2 syscall
but it appears on the sc_table and it is actually called in games. Is
this some kind of hack?
* use one central unified log with channels/priorities ad-hoc listener registration and de-registration
* disable buffering by default
* add multi-threaded ringbuffer implementation
* use buffered listener for the gui (using the ringbuffer)
* Splitted the file in SC_Process.h and SC_Process.cpp.
* Some argument data types modified on sys_process_* functions.
* Implemented sys_process_get_number_of_object and sys_process_get_id.
* Added dummy versions of other sys_process_* functions based on the old
SysCalls::lv2Process* code (which I deleted).
* Improved BE <-> LE comparisons on SC_Mutex, SC_Lwmutex and SC_Lwcond.
* Updated some SC_Memory functions to use mem_ptr_t<T>.
NOTE: There are probably better ways to get the active objects that
don't imply creating a new data type filled with std::set<u32>'s.
TODO: For some types, the corresponding std::set<u32> isn't being
updated when an object is created/destroyed. I'll take care of this
soon.
make precompiled header slimmer under Linux to increase CI and dev-machine build-times
make sure unused modules don't compile
add unused modules to the VS project to easier keep track of them
