add theory levels in the computation of glue #316

Job	Run time
ubuntu-latest\|debug\|--enable-mcsat\|CC=gcc CXX=g++	7m 58s
ubuntu-latest\|debug\|--enable-mcsat\|CC=clang CXX=clang++	8m 59s
ubuntu-latest\|debug\|--enable-thread-safety\|CC=gcc CXX=g++	3m 18s
ubuntu-latest\|debug\|--enable-thread-safety\|CC=clang CXX=clang++	3m 54s
ubuntu-latest\|release\|--enable-mcsat\|CC=gcc CXX=g++	4m 41s
ubuntu-latest\|release\|--enable-mcsat\|CC=clang CXX=clang++	5m 1s
ubuntu-latest\|release\|--enable-thread-safety\|CC=gcc CXX=g++	2m 30s
ubuntu-latest\|release\|--enable-thread-safety\|CC=clang CXX=clang++	2m 9s
ubuntu-latest\|gcov\|--enable-mcsat\|CC=gcc CXX=g++	7m 12s
ubuntu-latest\|debug\|--enable-thread-safety --enable-mcsat\|CC=gcc CXX=g++	7m 34s
	53m 16s

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