add Makefile.am for building/installing doxygen doc
add Makefile.am for building/installing doxygen doc

stapelberg/libxcb,OpenInkpot-archive/iplinux-libxcb,topcat/xcb-win32,stapelberg/libxcb,stapelberg/libxcb,topcat/xcb-win32,OpenInkpot-archive/iplinux-libxcb,topcat/xcb-win32,topcat/xcb-win32,topcat/xcb-win32,OpenInkpot-archive/iplinux-libxcb