Merge pull request #20 from smuzaffar/master

New Build Rules for big plugin
bug fix: Do not include Makefile.bigedm.rules if biglib product is not part of project
keep all the build rules in dev area so that one do not need to checkout BigProduct subsystem to build the big plugin dev area
rename BuildProducts to BigProducts; add BigProducts subsystem in the list of build for dev area
bug fix: do not recompile/link small libs/plugins if BigProductBuildFile is updated
various fixes for bigproduct and dev area
bug fix for plugins rules in dev area
typo: wild -> wildcard
allow to disable/enable big products via scram build enable-biglib|disable-biglib|check-biglib
bug fix: generated makefiles for tests should remain in tmp/arch
fix for lcg dict for bigplugin
add biglib/arch to LD_LIBRARY_PATH; basic support for checking dependent products of big plugin
drop use of UNIVERSAL::isa and replaces it with ref()