Clean up a small pile of compiler warnings.

Clean up the following compiler warnings:

1) Don't specifiy both -Winline and -Wno-inline in the debug warnings.

2) Yank -pendantic from the debug flags.  QT5 is not pre c++98 pendantic.  Optionally cockatrice could specify -std=c++98 and -pedantic.

3) Fix all of the -Wreorder warnings.

4) Fix the Wunused-parameter warnings with Q_UNUSED.

5) Fix servatrice qt5 prototypes for incomingConnection