Refactor the parsing of declarations so that template declarations can
parse just a single declaration and provide a reasonable diagnostic
when the "only one declarator per template declaration" rule is
violated. This eliminates some ugly, ugly hackery where we used to
require thatn the layout of a DeclGroup of a single element be the
same as the layout of a single declaration.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71596 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed