+20210424
+ + avoid using broken system macros for snprintf which interfere with
+ _nc_SLIMIT's conditionally adding a parameter when the string-hacks
+ configure option is enabled.
+ + add a "all::" rule before the new "check" rule in test/Makefile.in
+
+20210418
+ + improve CF_LINK_FUNCS by ensuring that the source-file is closed
+ before linking to the target.
+ + add "check" rules for headers in c++, progs and test-directories.
+ + build-fix for termsort module when configured with termcap (reports
+ by Rajeev V Pillai, Rudi Heitbaum).
+
+20210417
+ + extend --disable-pkg-ldflags option to also control whether $LDFLAGS
+ from the build is provided in -config and .pc files (Debian #986764).
+ + fix some cppcheck warnings, mostly style, in ncurses and c++
+ libraries and progs directory.
+ + fix off-by-one limit for tput's processing command-line arguments
+ (patch by Hadrien Lacour).
+
+20210403
+ + fix some cppcheck warnings, mostly style, in ncurses library and
+ progs directory.
+ + improve description of BSD-style padding in curs_termcap.3x
+ + improved CF_C11_NORETURN macro, from byacc changes.
+ + fix "--enable-leak" in CF_DISABLE_LEAKS to allow turning
+ leak-checking off later in a set of options.
+ + relax modification-time comparison in CF_LINK_FUNCS to allow it to
+ accept link() function with NFS filesystems which change the mtime
+ on the link target, e.g., several BSD systems.
+ + call delay_output_sp to handle BSD-style padding when tputs_sp is
+ called, whether directly or internally, to ensure that the SCREEN
+ pointer is passed correctly (reports by Henric Jungheim, Juraj
+ Lutter).
+