Merge branch 'fork-opt' of https://gitlab.engr.illinois.edu/llvm/hercules into fork-opt

hercules_opt/src/editor.rs

hercules_opt/src/fork_transforms.rs

hercules_opt/src/forkify.rs

hercules_opt/src/ivar.rs

hercules_opt/src/utils.rs

hercules_test/hercules_interpreter/src/lib.rs

hercules_test/hercules_tests/tests/fork_transform_tests.rs

hercules_test/hercules_tests/tests/forkify_tests.rs

hercules_test/hercules_tests/tests/interpreter_tests.rs

hercules_test/hercules_tests/tests/loop_tests.rs

juno_samples/cava/build.rs

juno_scheduler/src/compile.rs

juno_scheduler/src/ir.rs

juno_utils/src/stringtab.rs