Two changes:

Two changes:
1. Get rid of TOOLLINKOPTS as it is a hold over from llvm-test and only
   used to communicate additional libraries to the linker. The *standard*
   way to do that is with the LIBS variable which this change supports.

2. Allow the TARGETS_TO_BUILD variable to be set from the configuration
   substitution. This is the result of the --enable-target= parameter to
   the configure script.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21449 91177308-0d34-0410-b5e6-96231b3b80d8