Add more .gitignore files for the rest of generated stuff

compatcheck/.gitignore

+/sqlite3-difftbl-check.py

doc/.gitignore

+/version.ent

src/bin/auth/.gitignore

+/auth.spec
+/auth.spec.pre
+/auth_messages.cc
+/auth_messages.h
+/b10-auth
+/spec_config.h
+/spec_config.h.pre

src/bin/auth/benchmarks/.gitignore

+/query_bench

src/bin/bind10/.gitignore

+/bind10
+/bind10_src.py
+/run_bind10.sh

src/bin/bind10/tests/.gitignore

+/bind10_test.py

src/bin/bindctl/.gitignore

+/bindctl
+/bindctl_main.py
+/run_bindctl.sh

src/bin/bindctl/tests/.gitignore

+/bindctl_test

src/bin/cfgmgr/.gitignore

+/b10-cfgmgr
+/b10-cfgmgr.py

src/bin/cfgmgr/tests/.gitignore

+/b10-cfgmgr_test.py

src/bin/cmdctl/.gitignore

+/b10-cmdctl
+/cmdctl.py
+/cmdctl.spec
+/cmdctl.spec.pre
+/run_b10-cmdctl.sh

src/bin/cmdctl/tests/.gitignore

+/cmdctl_test

src/bin/ddns/.gitignore

+/b10-ddns
+/ddns.py

src/bin/dhcp4/.gitignore

+/b10-dhcp4
+/spec_config.h
+/spec_config.h.pre

src/bin/host/.gitignore

+/b10-host

src/bin/loadzone/.gitignore

+/b10-loadzone
+/b10-loadzone.py
+/run_loadzone.sh

src/bin/loadzone/tests/correct/.gitignore

+/correct_test.sh

src/bin/loadzone/tests/error/.gitignore

+/error_test.sh

src/bin/msgq/.gitignore

+/b10-msgq
+/msgq.py
+/run_msgq.sh

src/bin/msgq/tests/.gitignore

+/msgq_test