+20120218
+ + correct CF_ETIP_DEFINES configure macro, making it exit properly on
+ the first success (patch by Pierre Labastie).
+ + improve configure macro CF_MKSTEMP by moving existence-check for
+ mkstemp out of the AC_TRY_RUN, to help with cross-compiles.
+ + improve configure macro CF_FUNC_POLL from luit changes to detect
+ broken implementations, e.g., with Mac OS X.
+ + add configure option --with-tparm-arg
+ + build-fix for MinGW cross-compiling, so that make_hash does not
+ depend on TTY definition (cf: 20111008).
+