Initial Qt frontend code commit.

git-svn-id: https://svn.code.sf.net/p/desmume/code/trunk@5025 5577840e-afb3-4e59-9ef3-2b7f898b1952
Set eol style on Qt frontend files

git-svn-id: https://svn.code.sf.net/p/desmume/code/trunk@5026 5577840e-afb3-4e59-9ef3-2b7f898b1952
Qt:
- Add fps counter
- Minor code cleanup
- Linux: DEFINES cleanup

git-svn-id: https://svn.code.sf.net/p/desmume/code/trunk@5027 5577840e-afb3-4e59-9ef3-2b7f898b1952
Qt: Implement control config dialog.

git-svn-id: https://svn.code.sf.net/p/desmume/code/trunk@5028 5577840e-afb3-4e59-9ef3-2b7f898b1952