This reverts commit 5050e9e6.

-lrt nor needed in src/decompositionMethods/decompositionMethods/Make/options

Adding -lrt to decompositionMethods/decompositionMethods/Make/options
to get rid of get_clocktime error.

	modified:   SiCortex64Gcc/cOpt
	modified:   SunOS64Gcc/cOpt
	modified:   linux64Gcc/c++Opt
	modified:   linux64Gcc/cOpt
	modified:   linux64Gcc/general
	modified:   linux64Gcc42/c++Opt
	modified:   linux64Gcc42/cOpt
	modified:   linuxGcc/c++
	modified:   linuxGcc/cDebug
	modified:   linuxGcc/general
	modified:   linuxIA64Gcc/cOpt