Merge branch 'master' into mcsat-target-best #522

Job	Run time
ubuntu-latest\|debug\|--enable-mcsat\|CC=gcc CXX=g++	6m 35s
ubuntu-latest\|debug\|--enable-mcsat\|CC=clang CXX=clang++	6m 33s
ubuntu-latest\|debug\|--enable-thread-safety\|CC=gcc CXX=g++	4m 36s
ubuntu-latest\|debug\|--enable-thread-safety\|CC=clang CXX=clang++	5m 31s
ubuntu-latest\|release\|--enable-mcsat\|CC=gcc CXX=g++	6m 18s
ubuntu-latest\|release\|--enable-mcsat\|CC=clang CXX=clang++	6m 33s
ubuntu-latest\|release\|--enable-thread-safety\|CC=gcc CXX=g++	2m 46s
ubuntu-latest\|release\|--enable-thread-safety\|CC=clang CXX=clang++	3m 30s
ubuntu-latest\|gcov\|--enable-mcsat\|CC=gcc CXX=g++	6m 34s
ubuntu-latest\|debug\|--enable-thread-safety --enable-mcsat\|CC=gcc CXX=g++	6m 39s
	55m 35s

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