message: [lldb][CMake] Remove hard-coded settings, which are set up by caches now
  It has been there only for bridging the transition period until we have caches available.
diff: include(CheckCXXSymbolExists)
  include(CheckTypeSize)
  -# BEGIN Swift Mods
  -# We want this in a cmake cache
  -list(APPEND swift_lldb_framework_tools
  - darwin-debug
  - lldb-argdumper
  - lldb-server
  - repl_swift
  -)
  -
  -set(LLVM_EXTERNALIZE_DEBUGINFO OFF CACHE BOOL "" FORCE)
  -set(LLVM_TARGETS_TO_BUILD X86;ARM;AArch64 CACHE STRING "" FORCE)
  -
  -set(LLDB_VERSION_MAJOR 992 CACHE STRING "" FORCE)
  -set(LLDB_VERSION_MINOR 8 CACHE STRING "" FORCE)
  -set(LLDB_VERSION_PATCH 1 CACHE STRING "" FORCE)
  -set(LLDB_VERSION_SUFFIX svn CACHE STRING "" FORCE)
  -
  -if(APPLE)
  - set(LLDB_USE_SYSTEM_DEBUGSERVER ON CACHE BOOL "")
  - set(LLDB_BUILD_FRAMEWORK ON CACHE BOOL "")
  - set(LLDB_FRAMEWORK_TOOLS ${swift_lldb_framework_tools} CACHE STRING "")
  -endif()
  -
  -if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
  - set(LLDB_ALLOW_STATIC_BINDINGS ON CACHE BOOL "" FORCE)
  -endif()
  -# END Swift Mods
  -
  set(LLDB_PROJECT_ROOT ${CMAKE_CURRENT_SOURCE_DIR})
  set(LLDB_SOURCE_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/source")
  set(LLDB_INCLUDE_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/include")
  