[LIBCLC] Use default compilation DB for ClangTool run #9974
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Since 94f7c96 landed the
-fno-lifetime-dse
option is added to the compilation database, if using non-llvm based toolchains, this option is not compatible with clang and as tools invocation in libclc does not relay on the content of the DB, use the default, empty one.Also fix deprecated
makeArrayRef
warning.cc: abagusetty