When I am trying to move gdb_thread_db.h to common/ dir, I find there is
still a macro check like,

#ifndef HAVE_UINTPTR_T
...
#endif

I don't think we need this any more.  This piece of code was introduced
by patch [1] in 2003, however, in 2008, Daniel has a patch [2] to remove
tests for uintptr_t.

OK to remove this check?

[1] [rfa] gdb_thread_db.h: #errror if no uintptr_t.
http://sourceware.org/ml/gdb-patches/2003-02/msg00708.html
[2] [RFC] Use gnulib's stdint.h.
http://sourceware.org/ml/gdb-patches/2008-06/msg00478.html

-- 
Yao (齐尧)