Fix linking issues after changing how SDL and SDL_Mixer definitions are set from autotools
Also fix missing cflags and ldadd in Makefile.am
Merge pull request #175 from fdelapena/master

Fix linking issues after changing how SDL and SDL_Mixer definitions are ...
Fix ambiguous parentheses warning
Fix constructor members order warning
Fix uneeded semicolon after closing brackets pedantic warning
Merge pull request #176 from fdelapena/master

Clear warnings