Enable CGNSReader plugin if cgns is enabled.

Change-Id: Iac0ca09c2dc267d40dc9caa6f946a6da61cc4e0c
Revert "Enable CGNSReader plugin if cgns is enabled."

This reverts commit 10adb80f9b960a7a349d8a7d5e8145364ecdabeb.

The CGNS reader plugin has build issues on VS2008 and Mavericks builds.
Disabling this until those issues are fixed.

Change-Id: I8d93735dc25a6872376514205fd9c788e4b08fb8
Patch installation to remove absolute paths to the build dir

Change-Id: I13f772d053e3c3f723552a384d7f2f5547f4f97b
Enable system versions of most packages

Change-Id: Id5a95c5275c76cc39641df40a0b087ffe8b846b2
Added build scripts for cray systems

Change-Id: I3f19d8e7d20cf568aa705b8f45384e80801d942c