[4.1] 44f5299 Use the complete commit hash in the version string

[Dridi Boukelmoune]

commit 44f5299c374d57f5a8a7d09ca4371a3f868d8822
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Tue Oct 31 11:40:39 2017 +0100

    Use the complete commit hash in the version string
    
    Fixes #2468

diff --git a/include/Makefile.am b/include/Makefile.am
index ced33c8..2ac2e0f 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -101,7 +101,7 @@ BUILT_SOURCES = vcs_version.h vmod_abi.h
 MAINTAINERCLEANFILES = vcs_version.h
 vcs_version.h: FORCE
 	@if [ -d "$(top_srcdir)/.git" ]; then \
-		V="$$(git show -s --pretty=format:%h)" \
+		V="$$(git show -s --pretty=format:%H)" \
 		B="$$(git rev-parse --abbrev-ref HEAD)" \
 		H="$$(head -n 1 vcs_version.h 2>/dev/null || true)"; \
 		if [ "/* $$V */" != "$$H" ]; then \