Fix a -Wshadow warning from some oldish version of XCode.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14063 a5019735-40e9-0310-863c-91ae7b9d1cf9
Fix incorrect header guard macro, as awesomely detected by clang.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14064 a5019735-40e9-0310-863c-91ae7b9d1cf9
Remove fd_exists(), as it is never used.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14065 a5019735-40e9-0310-863c-91ae7b9d1cf9
Remove unused function swapfunc().


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14066 a5019735-40e9-0310-863c-91ae7b9d1cf9
Mark unused functions as unused, to keep Clang happy.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@14067 a5019735-40e9-0310-863c-91ae7b9d1cf9