[libvirt] [RFC PATCH 0/3+] cleanup __FUNCTION__ usage

[Eric Blake]

Posting as an RFC, since this patch series could be extended to do
a lot more cleanups - I don't want to do the extra work unless we
agree that this is worthwhile.  See each patch for more comments.

 [RFC PATCH 1/3] build: use gnulib func module
 [PATCH 2/3] datatypes: avoid redundant __FUNCTION__
 [RFC PATCH 3/3] libvirt: convert virLibNetworkError to avoid __FUNCTION__

 bootstrap.conf  |    1 +
 src/datatypes.c |   36 ++++++++++++++++++------------------
 src/libvirt.c   |   52 +++++++++++++++++++++++++++-------------------------
 3 files changed, 46 insertions(+), 43 deletions(-)