[PATCH v3 0/1] Add a test balloon for C99 support

There seems to be a decent amount of interest in moving to C99 as our base level of C support due to the many features it provides. Let's add a test balloon to make sure we haven't accidentally excluded any systems.

Changes from v2:
* Avoid setting the main CFLAGS to avoid breaking FreeBSD.
* Set SPARSE_FLAGS again since it's now necessary with the main CFLAGS
  not being set.
* Add a mention of "-std=gnu99" to the comment.
Changes from v1:
* Don't modify SPARSE_FLAGS since it's unnecessary.
* Improve commit message to explain why we use -std=gnu99.

brian m. carlson (1):
  git-compat-util: add a test balloon for C99 support

 Makefile                            |  2 +-
 contrib/buildsystems/CMakeLists.txt |  2 +-
 git-compat-util.h                   | 13 +++++++++++++
 3 files changed, 15 insertions(+), 2 deletions(-)