+20190420
+ + improve ifdef's for TABSIZE variable, to help with AIX/HPUX ports.
+
+20190413
+ + check for TABSIZE variable in test/configure script.
+ + used test/test_arrays.c to improve Caps.aix1 and Caps.hpux11
+ + corrected filtering of comments in MKparametrized.sh
+ + reduce duplication across Caps* files by moving some parts which do
+ not depend on order into Caps-ncurses.
+