Added missing include of the new sysdeps.h incorporating boll/true/false instead of TRUE/FALSE
Fixed a stupid error of mine. C++ flags have nothing to do with AM_CPPFLAGS ([C] [P]re[P]rocessor) but have to be set in AM_CXXFLAGS. Additionally UAE_CXXFLAGS is now propagated through all Makefile.am files for possible further usage (very unlikely...) and (of course) for consistencies sake.