[nem-en] the -using and -namespace flags

[Michal Moskal]

Hi,

while working on my new project I found it annoying to have to add
'using Nemerle.Logging' every time I use 'log (...)' for the first
time (or Nemerle.Profiling, Nemerle.Utility or for that matter even
Nemerle.Collections).

I thought it may not be that bad idea to add -using flag to the
compiler, which would add global set of used namespaces to all files
in current compilation. This way this stuff can be set once for a
project.

Along with that I would add -namespace that would put all compiled
files in specified namespace.

This two options together would reduce the initial clutter in source files.

--
   Michal Moskal,
   http://nemerle.org/~malekith/