[2667] minor doc update: mentioning --disable-rpath and not mentioning -rpath

(-rpath isn't actually checked in this macro)

examples/configure.ac

@@ -14,9 +14,10 @@ AC_LANG([C++])
 # Checks for BIND 10 headers and libraries
 AX_ISC_BIND10
 
-# We use -R, -rpath etc so the resulting program will be more likekly to
+# We use -R option etc so the resulting program will be more likekly to
 # "just work" by default.  Embedding a specific library path is a controversial
-# practice, though; if you don't like it you can remove the following setting.
+# practice, though; if you don't like it you can remove the following setting,
+# or use the --disable-rpath option.
 if test "x$BIND10_RPATH" != "x"; then
    LDFLAGS="$LDFLAGS $BIND10_RPATH"
 fi

examples/m4/ax_isc_rpath.m4

@@ -3,8 +3,8 @@ dnl
 dnl @summary figure out whether and which "rpath" linker option is available
 dnl
 dnl This macro checks if the linker supports an option to embed a path
-dnl to a runtime library (often installed in an uncommon place), such as
-dnl gcc's -rpath option.  If found, it sets the ISC_RPATH_FLAG variable to
+dnl to a runtime library (often installed in an uncommon place), such as the
+dnl commonly used -R option.  If found, it sets the ISC_RPATH_FLAG variable to
 dnl the found option flag.  The main configure.ac can use it as follows:
 dnl if test "x$ISC_RPATH_FLAG" != "x"; then
 dnl     LDFLAGS="$LDFLAGS ${ISC_RPATH_FLAG}/usr/local/lib/some_library"