* INSTALL
+ Added text to specifically tell to rename mingw32-make.exe
to make.exe if the former is found in a distro.
BTW most probably mingw32-make.exe would also make it, but
our make_gnu.bat file wants make.exe, and there is no
easy way to check (but can be done).
* utils/hbmk2/hbmk2.prg
! Fixed silly typo preventing object files to get their
proper extension in -hbcc mode.
* Minor internal change to avoid changing extensions twice
on the same string, since this may cause loss.