+20110604
+ + fixes for MirBSD port:
+ + set default prefix to /usr.
+ + add support for shared libraries in configure script.
+ + use S_ISREG and S_ISDIR consistently, with fallback definitions.
+ + add a few more checks based on ncurses/link_test.
+ + modify MKlib_gen.sh to handle sp-funcs renaming of NCURSES_OUTC type.
+