[PATCH v8] Add pretty printers for the NPTL lock types

[Martin Galvan]

Ldd seems to show the system libraries, not the built ones:

ldd test-mutex-printer
    linux-vdso.so.1 =>  (0x00007fff611fe000)
    libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007fc72fe5e000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fc72fa99000)
    /home/martin/glibc/install/lib/ld-linux-x86-64.so.2 =>
/lib64/ld-linux-x86-64.so.2 (0x00007fc7300a3000)

That's really weird, and I'm starting to think it's something on my
side. What does 'info share' show in your case?