maint: simplify some ignore files

* .hgignore: Delete, no longer used.
* examples/python/.gitignore: Delete, covered globally.
* include/.gitignore: Likewise.
* python/tests/.gitignore: Likewise.
* docs/schemas/.gitignore: Likewise.
* tests/xml2sexprdata/.gitignore: Likewise.
* tests/sexpr2xmldata/.gitignore: Likewise.
* tests/confdata/.gitignore: Likewise.
* tests/xencapsdata/.gitignore: Likewise.
* tests/xmconfigdata/.gitignore: Likewise.
* tests/xml2sexprdata/.gitignore: Likewise.

.hgignore

-syntax: glob
-*.a
-*.o
-*~
-.git
-ABOUT-NLS
-COPYING
-INSTALL
-Makefile
-Makefile.in
-aclocal.m4
-autom4te.cache
-build-aux/compile
-build-aux/config.guess
-build-aux/config.rpath
-build-aux/config.sub
-build-aux/depcomp
-build-aux/install-sh
-build-aux/ltmain.sh
-build-aux/missing
-build-aux/mkinstalldirs
-build-aux/mktempd
-config.cache
-config.guess
-config.h
-config.h.in
-config.log
-config.rpath
-config.status
-config.sub
-configure
-coverage
-docs/.memdump
-docs/Makefile
-docs/Makefile.in
-docs/apibuild.pyc
-docs/devhelp/Makefile
-docs/devhelp/Makefile.in
-docs/devhelp/libvirt.devhelp
-docs/examples/.deps
-docs/examples/.libs
-docs/examples/.memdump
-docs/examples/Makefile
-docs/examples/Makefile.in
-docs/examples/info1
-docs/examples/python/Makefile
-docs/examples/python/Makefile.in
-docs/examples/suspend
-docs/schemas/Makefile
-docs/schemas/Makefile.in
-examples/domain-events/events-c/*.exe
-examples/domain-events/events-c/.deps
-examples/domain-events/events-c/.libs
-examples/domain-events/events-c/Makefile
-examples/domain-events/events-c/Makefile.in
-examples/domain-events/events-c/event-test
-examples/hellolibvirt/.deps
-examples/hellolibvirt/.libs
-examples/hellolibvirt/Makefile
-examples/hellolibvirt/Makefile.in
-examples/hellolibvirt/hellolibvirt
-gnulib/lib/*.la
-gnulib/lib/*.lo
-gnulib/lib/.deps
-gnulib/lib/.libs
-gnulib/lib/Makefile
-gnulib/lib/Makefile.in
-gnulib/lib/alloca.h
-gnulib/lib/arpa/inet.h
-gnulib/lib/arpa_inet.h
-gnulib/lib/errno.h
-gnulib/lib/float.h
-gnulib/lib/netdb.h
-gnulib/lib/netinet/in.h
-gnulib/lib/netinet_in.h
-gnulib/lib/poll.h
-gnulib/lib/stdbool.h
-gnulib/lib/stdint.h
-gnulib/lib/stdio.h
-gnulib/lib/stdlib.h
-gnulib/lib/string.h
-gnulib/lib/sys/select.h
-gnulib/lib/sys/socket.h
-gnulib/lib/sys/stat.h
-gnulib/lib/sys/time.h
-gnulib/lib/sys_ioctl.h
-gnulib/lib/sys_select.h
-gnulib/lib/sys_socket.h
-gnulib/lib/sys_stat.h
-gnulib/lib/sys_time.h
-gnulib/lib/time.h
-gnulib/lib/unistd.h
-gnulib/lib/wchar.h
-gnulib/tests/.deps
-gnulib/tests/.libs
-gnulib/tests/Makefile
-gnulib/tests/Makefile.in
-gnulib/tests/sys
-gnulib/tests/test-EOVERFLOW
-gnulib/tests/test-alloca-opt
-gnulib/tests/test-arpa_inet
-gnulib/tests/test-c-ctype
-gnulib/tests/test-errno
-gnulib/tests/test-fseeko
-gnulib/tests/test-getaddrinfo
-gnulib/tests/test-getdelim
-gnulib/tests/test-gethostname
-gnulib/tests/test-getline
-gnulib/tests/test-gettimeofday
-gnulib/tests/test-lseek
-gnulib/tests/test-lstat
-gnulib/tests/test-netdb
-gnulib/tests/test-netinet_in
-gnulib/tests/test-perror
-gnulib/tests/test-poll
-gnulib/tests/test-random_r
-gnulib/tests/test-snprintf
-gnulib/tests/test-sockets
-gnulib/tests/test-stdbool
-gnulib/tests/test-stdint
-gnulib/tests/test-stdio
-gnulib/tests/test-stdlib
-gnulib/tests/test-strerror
-gnulib/tests/test-string
-gnulib/tests/test-sys_select
-gnulib/tests/test-sys_socket
-gnulib/tests/test-sys_stat
-gnulib/tests/test-sys_time
-gnulib/tests/test-time
-gnulib/tests/test-unistd
-gnulib/tests/test-vasnprintf
-gnulib/tests/test-vasprintf
-gnulib/tests/test-wchar
-include/Makefile
-include/Makefile.in
-include/libvirt/Makefile
-include/libvirt/Makefile.in
-libtool
-libvirt-*.tar.gz
-libvirt.pc
-libvirt.spec
-ltconfig
-ltmain.sh
-m4/Makefile
-m4/Makefile.in
-m4/acinclude.m4
-m4/aclocal.m4
-m4/codeset.m4
-m4/gettext.m4
-m4/glibc21.m4
-m4/iconv.m4
-m4/intdiv0.m4
-m4/intmax.m4
-m4/inttypes-pri.m4
-m4/inttypes.m4
-m4/inttypes_h.m4
-m4/isc-posix.m4
-m4/lcmessage.m4
-m4/lib-ld.m4
-m4/lib-link.m4
-m4/lib-prefix.m4
-m4/libtool.m4
-m4/longdouble.m4
-m4/longlong.m4
-m4/ltoptions.m4
-m4/ltsugar.m4
-m4/ltversion.m4
-m4/lt~obsolete.m4
-m4/nls.m4
-m4/po.m4
-m4/printf-posix.m4
-m4/progtest.m4
-m4/signed.m4
-m4/size_max.m4
-m4/stdint_h.m4
-m4/uintmax_t.m4
-m4/ulonglong.m4
-m4/wchar_t.m4
-m4/wint_t.m4
-m4/xsize.m4
-mingw32-libvirt.spec
-mkinstalldirs
-po/*.gmo
-po/Makefile
-po/Makefile.in
-po/Makefile.in.in
-po/Makevars.template
-po/POTFILES
-po/Rules-quot
-po/boldquot.sed
-po/en@boldquot.header
-po/en@quot.header
-po/insert-header.sin
-po/quot.sed
-po/remove-potcdate.sed
-po/remove-potcdate.sin
-po/stamp-po
-proxy/.deps
-proxy/.libs
-proxy/Makefile
-proxy/Makefile.in
-proxy/libvirt_proxy
-python/*.la
-python/*.lo
-python/*.loT
-python/*.pyc
-python/.deps
-python/.libs
-python/Makefile
-python/Makefile.in
-python/gen_prog
-python/generated.stamp
-python/libvirt-export.c
-python/libvirt-py.[ch]
-python/libvirt.py
-python/libvirtclass.py
-python/libvirtclass.txt
-python/tests/Makefile
-python/tests/Makefile.in
-qemud/*.gcda
-qemud/*.gcno
-qemud/*.la
-qemud/*.lo
-qemud/.deps
-qemud/.libs
-qemud/Makefile
-qemud/Makefile.in
-qemud/libvirt_qemud
-qemud/libvirtd
-qemud/libvirtd.init
-qemud/libvirtd.logrotate
-results.log
-src/*.cov
-src/*.exe
-src/*.gcda
-src/*.gcno
-src/*.gcov
-src/*.i
-src/*.la
-src/*.lo
-src/*.loT
-src/*.s
-src/.deps
-src/.libs
-src/Makefile
-src/Makefile.in
-src/libvirt.syms
-src/libvirt_lxc
-src/libvirt_parthelper
-src/virsh
-src/virsh-net-edit.c
-src/virsh-pool-edit.c
-stamp-h
-stamp-h.in
-stamp-h1
-tests/*.exe
-tests/*.gcda
-tests/*.gcno
-tests/.deps
-tests/.libs
-tests/Makefile
-tests/Makefile.in
-tests/confdata/Makefile
-tests/confdata/Makefile.in
-tests/conftest
-tests/eventtest
-tests/nodedevxml2xmltest
-tests/nodeinfotest
-tests/object-locking
-tests/object-locking-files.txt
-tests/object-locking.cmi
-tests/object-locking.cmx
-tests/qemuargv2xmltest
-tests/qemuhelptest
-tests/qemuxml2argvtest
-tests/qemuxml2xmltest
-tests/qparamtest
-tests/reconnect
-tests/seclabeltest
-tests/sexpr2xmldata/Makefile
-tests/sexpr2xmldata/Makefile.in
-tests/sexpr2xmltest
-tests/statstest
-tests/virshtest
-tests/xencapsdata/Makefile
-tests/xencapsdata/Makefile.in
-tests/xencapstest
-tests/xmconfigdata/Makefile
-tests/xmconfigdata/Makefile.in
-tests/xmconfigtest
-tests/xml2sexprdata/Makefile
-tests/xml2sexprdata/Makefile.in
-tests/xml2sexprtest
-tools/Makefile
-tools/Makefile.in
-tools/virt-xml-validate
-tools/virt-xml-validate.1
-update.log

docs/schemas/.gitignore

-Makefile
-Makefile.in

examples/python/.gitignore

-Makefile
-Makefile.in

include/.gitignore

-Makefile
-Makefile.in

python/tests/.gitignore

-Makefile
-Makefile.in

tests/confdata/.gitignore

-Makefile
-Makefile.in

tests/sexpr2xmldata/.gitignore

-Makefile
-Makefile.in

tests/xencapsdata/.gitignore

-Makefile
-Makefile.in

tests/xmconfigdata/.gitignore

-Makefile
-Makefile.in

tests/xml2sexprdata/.gitignore

-Makefile
-Makefile.in