Use these variables. Provide doxygen with SRCDIR and TOP_SRCDIR
Use these variables. Provide doxygen with SRCDIR and TOP_SRCDIR

	* docs/reference/Doxyfile.in: Use these variables.
	* docs/reference/Makefile.am (html/index.html): Provide doxygen
	with SRCDIR and TOP_SRCDIR environment variables.

	* sigc++/functors/slot.h.m4: Make slot::call_type typedef public;
	this fixes a g++ 3.3 error in signal.h.

	* sigc++/signal.h.m4: Make the signal::accumulated class public;
	this fixes a g++ 3.3 error in test_accumulated.cc.

Distrotech/libsigcxx2,johne53/MB3Sigc-2,johne53/MB3Sigc-2,Mixaill/cmake.libsigcpp,Distrotech/libsigcxx2,Distrotech/libsigcxx2,johne53/MB3Sigc-2,Mixaill/cmake.libsigcpp,johne53/MB3Sigc-2,Mixaill/cmake.libsigcpp