Adjust to the moving target called the C++ standard. Apparently nowadays it's not allowed to define an explicit copy constructor but not an assignment operator. Consequently, defining the explicit copy constructor in terms of the implicit/automatic assignment operator for general convenience no longer works. Add assignment operators. Caution: not tested with the IBM compiler, but there's no particular reason it shouldn't work.

# Sources.

SRCS=\
	agcstack.cpp \
	agdict.cpp \
	agnotify.cpp \
	agref.cpp \
	agstack.cpp \
	agstring.cpp \
	assert.cpp \
	bitmap.cpp \
	cint.cpp \
	file.cpp \
	log.cpp \
	myalloc.cpp \
	port.cpp \
	suppinst.cpp

LIB=support
LIBTYPE=LIB

INCDIRS=$(TOP)/anagram/support $(TOP)/anagram/agcore

include $(TOP)/mk/lib.mk