OpenNebula

feature #1303: Add a new marketplace tab

feature #1303: Add marketplace client to sunsonte

feature #1303. Group some options in conf file

feature #1303: Add License

feature #1303: Fix onemarket show

feature #1303: added downloader script

supports gzip and bz2 compressors and also tar and zip archivers.
copies files and downloads http/https paths

feature #1303: added downloader to datastore fs/cp

feature #1303: changed datastores cp to use downloader.rb

feature #1303: bug in downloader.rb (reading stder for local files)

feature #1303: make the uncompressor write to the fd

ruby 1.8.7 has a bug writting files (or pipes) to overcome it
the file (or stdout) is opened in the downloader and then
the uncompress command is started redirecting stdout to the
descriptor. Pseudocode:

if write_to_stdout?
    fd=dup(stdout)
  else
    fd=open(output_file)
  end

exec("$UNCOMPRESSOR >&$fd")

feature #1303: Use wget instead of curl to get http headers

feature #1303: changed datastores to use sh downloader

feature #1303: add license to downloader.sh and minor changes

feature #1303: downloader.sh doesn't send garbage to the oned.log file

Feature #1303: Improve marketplace sunstone plugin

Reduced duplicated code, make better use of Susntone actions.
(cherry picked from commit 19413babfa1b286bdedf5cb93fad6c8bd7a074f2)