Log Message:
cdk: Update to 5.0-20191231

2019/12/31
	+ fix issues found with check-manpage
	+ updated configure macros, from xterm and ncurses development:
	  CF_ADD_LIBS CF_GCC_VERSION CF_GCC_WARNINGS CF_PROG_CC CF_PROG_LINT
	  CF_X_TOOLKIT
	+ update config.guess, config.sub