Shift TOTP/HOTP functions in library.c under a single #ifdef HAVE_LIBOATH
Shift TOTP/HOTP functions in library.c under a single #ifdef HAVE_LIBOATH

Signed-off-by: David Woodhouse <b460d66aaf00c296a3db1c1d9eeafc081d5f7d70@intel.com>

atyndall/openconnect,cernekee/openconnect,mveplus/openconnect-client,mveplus/openconnect-client,liiir1985/openconnect,matlockx/openconnect,don-johnny/openconnect,mtmiller/openconnect,liiir1985/openconnect,liiir1985/openconnect,lins05/openconnect,cernekee/openconnect,cernekee/openconnect,mveplus/openconnect-client,lins05/openconnect,matlockx/openconnect,matlockx/openconnect,mveplus/openconnect-client,don-johnny/openconnect,nmav/openconnect-mine,nmav/openconnect-mine,liiir1985/openconnect,chadcatlett/openconnect,chadcatlett/openconnect,atyndall/openconnect,nmav/openconnect-mine,chadcatlett/openconnect,brandt/openconnect,matlockx/openconnect,atyndall/openconnect,chadcatlett/openconnect,atyndall/openconnect,mtmiller/openconnect,nmav/openconnect-mine,brandt/openconnect,don-johnny/openconnect,lins05/openconnect,lins05/openconnect,brandt/openconnect,mtmiller/openconnect,mtmiller/openconnect,brandt/openconnect,don-johnny/openconnect,cernekee/openconnect