[horde] Resolve pear too old on Redhat 5

[D G Teed]

2011/6/21 maxime <maxime at frequence-ecoles.net>:

> Run first 'pear upgrade pear' ?

I've tried this before.  The result:

pear/Console_Getopt requires PEAR Installer (version >= 1.8.0),
installed version is 1.4.9
No valid packages found
upgrade failed