couple of fixes for cp-demangle.c

[Gabriel Dos Reis]

Mark Mitchell <mark@codesourcery.com> writes:

[...]

| Gaby was objecting to the space.  (Gaby, did the patch you sent me
| handle `operator new' and `operator delete' correctly?  I don't mind
| spelling `operator==' that way, but `operator delete' definitely needs
| the space.  We could use isalnum to decide whether or not to add the
| space.)
| 
| So, I think the consensus is that we should have a space *only* for
| operators whose operator name starts with an alpha-numberic
| character.  Would you mind making this change?

Yes, as soon as we reach consensus.

-- Gaby
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