Fix missing libLLVMDemangle

Closes #78

I used llvm_map_components_to_libnames
as shown in the example of this page:
https://llvm.org/docs/CMake.html#embedding-llvm-in-your-project

Signed-off-by: Marc-Andre Laperle <[email protected]>

Author: MarkZ3

src/CMakeLists.txt

@@ -91,14 +91,8 @@ if (lib_llvm_shared)
   set(lib_llvm "${lib_llvm_shared}")
 else()
   message(STATUS "Can't find LLVM shared library, falling back to static linking LLVMSupport")
-  find_library(lib_llvm_static LLVMSupport HINTS ${LLVM_LIBRARY_DIRS})
-  set(lib_llvm "${lib_llvm_static}")
+  llvm_map_components_to_libnames(lib_llvm support)
 
-  get_property(LLVMSupportDeps GLOBAL PROPERTY LLVMBUILD_LIB_DEPS_LLVMSupport)
-  foreach(dependency ${LLVMSupportDeps})
-    find_library(lib ${dependency} HINTS ${LLVM_LIBRARY_DIRS})
-    list(APPEND llvm_deps "${lib}")
-  endforeach()
   if (LLVM_ENABLE_TERMINFO AND NOT WIN32)
     find_library(TERMINFO_LIB NAMES terminfo tinfo curses ncurses ncursesw)
     if (TERMINFO_LIB)