What it's for
This file is used to ensure a repeatable configuration for building OO.o. It achieves this by taking a snapshot of your environment and freezing all your important variables. There are two versions: LinxuIntelEnv.Set (for csh/tcsh [as used in the build itself]) and LinxuIntelEnv.Set.sh (for use by all right-minded bash users). Before you do an incremental build you to 'source' this:
source ./LinuxIntelEnv.Set.sh dmake
These files contain the absolute path of the build - thus when you copy or move the build, you need to use the relocate tool to relocate it to the new position.
What it looks like
ENABLE_CUPS="TRUE" ENABLE_FONTCONFIG="TRUE" ENABLE_DIRECTX="" VC_STANDARD="" WITH_GPC="NO" WITH_LIBART="NO" ... on and on ... export ... ENABLE_CUPS ENABLE_FONTCONFIG ENABLE_DIRECTX ...