remove -disable-internalize workaround during lto, which was removed from llvm, and appears no longer needed

Author: kripken

emcc

@@ -1264,8 +1264,8 @@ try:
     # If we can LTO, do it before dce, since it opens up dce opportunities
     if shared.Building.can_build_standalone() and llvm_lto and llvm_lto != 2 and shared.Building.can_use_unsafe_opts():
       if not shared.Building.can_inline(): link_opts.append('-disable-inlining')
-      # do not internalize in std-link-opts - it ignores internalize-public-api-list - and add a manual internalize
-      link_opts += ['-disable-internalize'] + shared.Building.get_safe_internalize() + ['-std-link-opts']
+      # add a manual internalize with the proper things we need to be kept alive during lto
+      link_opts += shared.Building.get_safe_internalize() + ['-std-link-opts']
       # execute it now, so it is done entirely before we get to the stage of legalization etc.
       shared.Building.llvm_opt(final, pre_fastcomp_opts + link_opts)
       if DEBUG: save_intermediate('lto', 'bc')