Added HOST and TARGET checks
Added automatic update of the *spec.in files (Linux RPM stuff)

RTLD_GLOBAL and RTLD_LAZY separately.

9999 KB and 100 MB since it then can display the size as XX.X MB instead of
just XX as before.

adjusted progress bar
user agent sent when talking non-http through a http proxy

properly when the new URL is an absolute one to a different port than the
first URL...