scsh-install-pkg: build and install

Hi.

Recently I installed the latest stable orion (0.2) and I had to
install scsh-install-lib-1.1.2, scx-0.2 and sunterlib-0.7 as well.

It all went very smooth and easy, the only slight annoyance was that
scsh-install-pkg does not allow me to *compile* stuff as non-root and
afterwards *install* it as root.

This is both a potential security hazard (because the system
administrator has to inspect everything that happens in the build
phase to determine if the package can be trusted and not only the
install steps, which means the risk for malicious actions to remain
unnoticed is much higher) and an inconvenience, since it conflicts
with existing packaging systems (e.g. bkhl pointed out that he
couldn't separate the compile phase and the install phase for a debian
package that way).

A separate build phase would be a very much appreciated feature of the
packaging system.

Kind regards
-- 
Friedel
'Let's settle this once and for all, shall we?' said Cohen. He stood
up. 'Hands up those who'd rather die than have me as Emperor.'
		-- Terry Pratchett "Interesting Times"