HOWTO update
HOWTO update

* removed one bit of whitespace.
* Marked up references to gpgme.h.
* Fixed one spelling error.
* Removed py2.6 from python search order since even if it is
  supported, it shouldn't be encouraged.

gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme,gpg/gpgme