generator code.
* isisd/Makefile.am: Variables to handle conditonal compiling of
topology generator code.
* isisd/isis_lsp.c: lsppdu_realloc() is used by topology generator.
* isisd/isisd.c: Rename show_isis_topology_cmd to not conflict the one
in the isis_spf.c.
* isisd/isisd.h: Remove TOPOLOGY_GENERATE define, it will be defined in
toplevel config.h if topology generator is enabled.
* isisd/topology/Makefile.am: Handle the libtoolized Quagga libraries.
- add privs support
- use misc quagga's definitions
- make it compile"able"
- fix segfault cases related to hostname()
- add debug isis xxx command
This patch has been approved by Paul Jakma.