- cannot map program counters to function names for symbols loaded by dlopen/dlsym
- does not support multi-threaded programs
- mprfl-so requires symbol _init to be present, which is not always true for
  stripped executables
- must set MPRSH on solaris8: cannot run some MPRFI pipelines using /bin/sh
- config/btsparc.c is GCC specific
- mprmap's -p option does not always work (GNU_V3 and AUTO demangling do not
  honor DMGL_PARAMS in demangle/cp-demangle.c:cplus_demangle_v3())
