put version information in separate file

Signed-off-by: Sven Strickroth <email@cs-ware.de>

CMakeLists.txt

@@ -14,7 +14,7 @@
 PROJECT(libgit2 C)
 CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
 
-FILE(STRINGS "include/git2.h" GIT2_HEADER REGEX "^#define LIBGIT2_VERSION \"[^\"]*\"$")
+FILE(STRINGS "include/git2/version.h" GIT2_HEADER REGEX "^#define LIBGIT2_VERSION \"[^\"]*\"$")
 
 STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"([0-9]+).*$" "\\1" LIBGIT2_VERSION_MAJOR "${GIT2_HEADER}")
 STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"[0-9]+\\.([0-9]+).*$" "\\1" LIBGIT2_VERSION_MINOR  "${GIT2_HEADER}")

include/git2.h

@@ -8,10 +8,7 @@
 #ifndef INCLUDE_git_git_h__
 #define INCLUDE_git_git_h__
 
-#define LIBGIT2_VERSION "0.15.0"
-#define LIBGIT2_VER_MAJOR 0
-#define LIBGIT2_VER_MINOR 15
-#define LIBGIT2_VER_REVISION 0
+#include "git2/version.h"
 
 #include "git2/common.h"
 #include "git2/errors.h"

include/git2/version.h

+/*
+ * Copyright (C) 2009-2011 the libgit2 contributors
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_git_version_h__
+#define INCLUDE_git_version_h__
+
+#define LIBGIT2_VERSION "0.15.0"
+#define LIBGIT2_VER_MAJOR 0
+#define LIBGIT2_VER_MINOR 15
+#define LIBGIT2_VER_REVISION 0
+
+#endif