r7691: * add .gdbinit to the svn:ignore files

r7691: * add .gdbinit to the svn:ignore files
* start adding write support to the Samba registry
  Flesh out the server implementations of
  RegCreateKey(), RegSetValue(), RegDeleteKey() and RegDeleteValue()

I can create a new key using regedit.exe now but the 'New Key #1'
key cannot be deleted yet.
(This used to be commit e188fdbef8f0ad202b0ecf3c30be2941ebe6d5b1)