+2020-06-24 Keith Marshall <keith@users.osdn.me>
+
+ Streamline the installation procedure.
+
+ * Makefile.in (LIBEXEC_DATA): Rename it as...
+ (LIBEXEC_DLLS): ...this; other data should be enumerated separately,
+ but there is currently none. Update all references, as appropriate.
+ (install): Add dependency on "all". Eliminate "for" loops, using...
+ (INSTALL_PROGRAM): ...this, to perform one-shot installation for...
+ (BIN_PROGRAMS, LIBEXEC_PROGRAMS): ...each of these sets, and...
+ (INSTALL_DATA): ...this, for one-shot installation of...
+ (LIBEXEC_SCRIPTS): ...these.
+ (install-strip): Reimplement recursively, appending "-s" to...
+ (INSTALL_PROGRAM): ...this; hence remove requirement for...
+ (STRIP): ...this; delete definition.
+
+ * configure.ac (STRIP): No longer used, so no need for...
+ (AC_CHECK_TOOL): ...this, to locate it; delete configuration check.
+