Description of problem:

macros should be able to provide default values, but don't seem to.


Version-Release number of selected component (if applicable):
4.0.1


How reproducible:
very

Steps to Reproduce:
1. create Custom Info tag named "asset"
2. create config channel file w/ following macro cut and pasted from Docs:

	 asset={@ rhn.system.custom_info(asset) =
	  'Asset #' @} 

3. submit edits
  
Actual results:

  top of page error: Invalid macro function name in file contents: 'Asset #'


Expected results:

   clean submission of edits

Additional info:

  surprisingly, seems to be whitespace dependent... if new line is removed
  (and possible offending '#' metacharacter is removed):

       asset={@ rhn.system.custom_info(asset) =  'Asset default' @} 

  error messgae becomes:

     Invalid macro token in file contents: rhn.system.custom_info(asset) =
'Asset default'

  if default value is removed: 

        asset={@ rhn.system.custom_info(asset) @} 

   all is fine.