[PATCH] gitweb: Factor out gitweb_have_snapshot()

Create gitweb_have_snapshot() which returns true
of snapshot is available and enabled, else false.

Signed-off-by: Luben Tuikov <redacted>
---
 gitweb/gitweb.perl |   14 +++++++++-----
 1 files changed, 9 insertions(+), 5 deletions(-)