new options to testcurl.pl, fixed curl-config and removed compiler warnings

Daniel (14 March 2005)

- Added a few missing features to the curl-config --features list

- Modified testcurl.pl to now offer

  1 - command line options for all info it previously only read from

      file: --name, --email, --desc and --configure

  2 - --nocvsup makes it not attempt to do cvs update

  3 - --crosscompile informs it and makes it not attempt things it can't do

- Fixed numerous win32 compiler warnings.

- Removed the lib/security.h file since it shadowed the mingw/win32 header

  with the same name which is needed for SSPI builds. The contents of the

  former security.h is now i krb4.h