definition of the signature block and module block, and adding definitions
of the global type pool and symbol table. More still to come.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13658 91177308-0d34-0410-b5e6-96231b3b80d8
file format. This format is being extracted from the source code and the
small recesses of Chris' brain.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13625 91177308-0d34-0410-b5e6-96231b3b80d8