Moved sit class files into sub directories for all the packages.

Moved packages into sub directories easing the use of additional
installation files (e.g. patches).

Calling sit now with the following syntax:

[OPTIONS] ./sit <category>/<package>/<package>-<version>

packages/mpi/mvapich2

@@ -1,25 +0,0 @@
-#!/bin/sh
-# sit class file
-#
-# Christoph Niethammer <niethammer@hlrs.de> (C) 2011
-#
- 
-CATEGORY="mpi"
-PACKAGE="mvapich2"
-VERSION="1.6"
-URL="http://mvapich.cse.ohio-state.edu/overview/mvapich2/"
-INSTALLER="Rainer Keller <keller@hlrs.de>"
-
-# Archive A and package name P
-A=${PACKAGE}-${VERSION}.tgz
-P=${PACKAGE}-${VERSION}
- 
-# Circumvent problems with parallel build
-MAKEOPTS="-j1"
-
-
-# Other interesting configure options:
-#--with-file-system=lustre
-CONFIGURE_OPTS="\
-        --enable-shared \
-        --enable-sharedlibs=gcc"