needed spacing options for gcc

I'm using GNU indent 2.2.9 on Fedora 8.

I'm investigating using indent to set the canonical style for GCC.
GCC uses the GNU coding style, but with a couple local tweaks.  It
would be nice if indent supported these.

* GCC doesn't put a blank after unary operators, in particular "!".
  So instead of:  if (! foo), gcc would use if (!foo).

* GCC puts a space around the ":" in a bitfield declaration.  So
  instead of:

    unsigned int field:1;

  we use

    unsigned int field : 1;

Tom