valgrind: make trusty tcmalloc supporession more general

To capture this:

  <kind>SyscallParam</kind>
  <what>Syscall param msync(start) points to unaddressable byte(s)</what>
  <stack>
    <frame>
      <ip>0x5081B3D</ip>
      <obj>/lib/x86_64-linux-gnu/libpthread-2.19.so</obj>
      <dir>/build/buildd/eglibc-2.19/nptl/../sysdeps/unix</dir>
      <file>syscall-template.S</file>
      <line>81</line>
    </frame>
    <frame>
      <ip>0x76BA123</ip>
      <obj>/usr/lib/x86_64-linux-gnu/libunwind.so.8.0.1</obj>
    </frame>
    <frame>
      <ip>0x76BCEF6</ip>
      <obj>/usr/lib/x86_64-linux-gnu/libunwind.so.8.0.1</obj>
    </frame>
    <frame>
      <ip>0x76BE151</ip>
      <obj>/usr/lib/x86_64-linux-gnu/libunwind.so.8.0.1</obj>
    </frame>
    <frame>
      <ip>0x76BE4E8</ip>
      <obj>/usr/lib/x86_64-linux-gnu/libunwind.so.8.0.1</obj>
    </frame>
    <frame>
      <ip>0x76BAA30</ip>
      <obj>/usr/lib/x86_64-linux-gnu/libunwind.so.8.0.1</obj>
      <fn>_ULx86_64_step</fn>
    </frame>
    <frame>
      <ip>0x5C42052</ip>
      <obj>/usr/lib/libtcmalloc.so.4.1.2</obj>
      <fn>GetStackTrace(void**, int, int)</fn>
    </frame>
    <frame>
      <ip>0x5C349F4</ip>
      <obj>/usr/lib/libtcmalloc.so.4.1.2</obj>
      <fn>tcmalloc::PageHeap::GrowHeap(unsigned long)</fn>
    </frame>
    <frame>
      <ip>0x5C34D02</ip>
      <obj>/usr/lib/libtcmalloc.so.4.1.2</obj>
      <fn>tcmalloc::PageHeap::New(unsigned long)</fn>
    </frame>
    <frame>
      <ip>0x5C25D0C</ip>
      <obj>/usr/lib/libtcmalloc.so.4.1.2</obj>
    </frame>
    <frame>
      <ip>0x5C46378</ip>
      <obj>/usr/lib/libtcmalloc.so.4.1.2</obj>
      <fn>operator new[](unsigned long)</fn>
    </frame>

Signed-off-by: Sage Weil <sage@redhat.com>