cellPngDec Module Added

Implemented 'cellPngDec', using 'sys_fs' to access the files and the
'lodepng' library to decode PNG buffers to Raw-pixel buffers that can be
used as textures.
cellJpgDec Module Added

*Replaced "sys_jpgdec" with "cellJpgDec" in
"rpcs3\Emu\SysCalls\Modules.cpp".
*Implemented 'cellJpgDec', using 'sys_fs' to access the files and the
'jpg-compressor' (jpgd) library to decode JPG buffers to Raw-pixel
buffers that can be
used as textures.
*Fixed memory leak issue in cellPngDec and minor changes.
cellGifDec Module Added

*Implemented 'cellGifDec', using 'sys_fs' to access the files and the
'stb_image' (stblib) library to decode GIF buffers to Raw-pixel buffers
that can be used as textures.

*Replace 'lodepng' and 'jpeg-compressor' libraries with 'stb_image' in
cellPngDec and cellJpgDec, respectively.

*Fixed minor issues in cellPngDec and cellJpgDec.
Keybord support Added

* Implemented 'cellKb*' functions from 'sys_io' module, which are part
of the libkb library.

* Added corresponding entries in the 'Config > Settings' menu to change
the handler of the keyboard. Supported handlers: Windows, Null.

INFO: This keyboard library is *very* experimental and I am aware of
some bugs. There will be improvements soon.
Keybord support improved

*Improved Keyboard:
- Fixed crash when using Null keyboard handler
- Added support for meta keys
- Added support for {caps, num, scroll} lock.

*Small issues fixed in previous module:
- cellGifDec: Fixed wrong information of packet field in
cellGifDecReadHeader.
- cellGifDec: Set DataOutInfo.recordType as 1 since the output is always
an image.
- cellJpgDec: Set colorSpace as 3, until a better function is
implemented.
- cellJpgDec, cellPngDec: Added RGBA support.

*Changed layout of "Config > Settings" menu.
Mouse support added

*Implemented 'cellMouse*' functions from 'sys_io' module, which are part
of the libmouse library.

* Added corresponding entries in the 'Config > Settings' menu to change
the handler of the mouse. Supported handlers: Windows, Null.

* cellGifDec: Fixed some errors and added support for RGBA color.

(Remember: The mouse support is very experimental)
Minor issues fixed

*Memory leak in image decodification modules.

*Changed mouse wheel delta value.
Merge pull request #4 from AlexAltea/master

New image decodification modules & IO devices
Improved sys_fs module

- cellFsStat now accepts mounting points in the path argument.

- cellFsMkdir, cellFsRmdir, cellFsUnlink and cellFsRename are now using
the real path provided by the VFS.

- cellFsFtruncate, cellFsTruncate and cellFsFGetBlockSize are partially
implemented.

Note: I have spotted a bug in cellFsRename and cellFsRmdir (this has
nothing to do with the changes I made), but I don't dare to fix it since
I am not sure if I will break other functions with my solution.
Improved image decoding modules

* Huge improvement in the speed of cell{Png|Gif|Jpg}DecDecodeData when
reading input files.

Note: Sorry if this commit is too "small", but I need to sync every
change since I use two PCs.
Debugger improved: Instruction editor added

How to use the instruction editor:
1. Load an .ELF file
2. Select an instruction from any valid memory address inside any
thread.
3. Press 'E' key and have fun. :P

Note1: I suggest to remove the function InterpreterDisAsmFrame::DClick
and use InterpreterDisAsmFrame::InstrKey to do all debugging-related
actions (Add breakpoint, Edit, Step, Run, etc.) using the same keyboard
layout as debuggers like OllyDbg.

Note2: The final binary is 200 KB larger due to this feature. This issue
should be fixed in the future. This has probably something to do with
the #include's.
Debugger improved: Register editor added

How to use the register editor:
1. Load an .ELF file
2. Select any instruction from a thread. (This is a workaround to
activate the appropriate event listener. This will be changed in the
future).
3. Press 'R' key and modify any register you want.

Note:
The register editor only works with PPU and SPU threads.

Additional changes:
* Fixed the filesize problem caused by the instruction editor dialog.
* Instruction Editor: Fixed small issue in SPU threads
More SPU Instructions: Floating point arithmetic

Implemented Floating/Double-floating arithmetic operations: Add,
Substract and Multiply: FA, FS, FM, DFA, DFS, DFM respectively.

* Fixed issue in the register editor: Wrong value displayed when reading
64 bit or 128 bit registers.

* Fixed issue in the register editor: Error when writing to 128 bit
registers.
More SPU Instructions: Floating point comparison

* Implemented Floating/Double-floating comparison instructions:
FCGT, FCMGT, FCEQ, FCMEQ, DFCGT, DFCMGT, DFCEQ, DFCMEQ

* Implemented more Floating/Double-floating operations:
FMA, FMS, FNMS, DFMA, DFMS, DFNMS, DFNMA

* Implemented Double / Single floating-point conversion:
FESD, FRSD
Changed syntax of last SPU instructions
Merge pull request #5 from AlexAltea/master

Improved debugger, modules and the SPU interpreter
Improved mem_t.
- Implemented mem_ptr_t.
- Fixed issue 3.
Improved image dec. modules & New dummy modules

* Improved image decoding modules:
- Fixed error that appeared after last commit (eebe859f83).
- Changed some functions to use the mem*_t classes.
- Implemented cell*DecSetParameter.

* Created new dummy modules for sys_net (0x0000), sys_http (0x0001),
cellHttpUtil (0x0002) and cellSsl (0x0003).
More dummy modules

* 41 new dummy modules created.

NOTE: I have detached the previous 4 dummy modules of my last commit
(1a85ccbbf4) from the project since they will consume space of the
executable, and compilation time and don't provide anything useful yet,
the same applies to this commit. The only reason to provide this dummy
modules is to avoid that developers have to spend too much time on
creating the template of the module before implementing functions. If
you want to implement a function of any of these modules, add the
corresponding file to the project first.
Some Modules updated to use mem*_t class

cellKb, cellMouse and cellSysutil now use the mem*_t instances instead
of using "u32 *_addr" variables.