handle. This used to be documented as being index -2 but now it
seems to be index 0. As this is not guaranteed we need to look up
the real handle value for PROG_HANDLE and skip it when interating
through all the DSOs. Fixes infinite recursion on HP-UX in the
getenv() replacement.
statically compiling in the sudoers plugin but still allow other
plugins to be loaded. The new --enable-static-sudoers configure
option will cause the sudoers plugin to be compiled statically into
the sudo binary. This does not prevent other plugins from being
loaded as per sudo.conf.