+20221001
+ + modify configure/scripts to work around interference by GNU grep 3.8
+ (report by Sam James).
+ + update CF_XOPEN_SOURCE, adding variants "gnueabi" and "gnueabihf" to
+ get _DEFAULT_SOURCE special case (report by Adam Sampson)
+
+20220924
+ + modify configure macro CF_BUILD_CC to check if the build-compiler
+ works, rather than that it is different from the cross-compiler, e.g.,
+ to accommodate a compiler which can be used for either purpose with
+ different flags (report by Mikhail Korolev).
+ + fix another memory-leak in tic.
+ + correct change for cppcheck in menu library (report/analysis by
+ "tuxway", cf: 20220903).
+ + update config.guess, config.sub
+