made python optional for no real reason

scripts/git_branch_name.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+output="$(git rev-parse --abbrev-ref HEAD)"
+
+if test -n "$output";then
+	echo "#define GIT_BRANCH_NAME \"$output\" //test"
+fi

scripts/git_commit_hash.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+output="$(git describe --always --dirty --abbrev --match="NeVeRmAtCh")"
+
+if test -n output;then
+	echo "#define GIT_COMMIT_HASH \"$output\""
+fi

scripts/git_tag_name.sh

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+output="$(git tag --points-at HEAD)"
+
+if test -n "$output";then
+	if test "${output:0:1}" = "v" || test "${output:0:1}" = "V";then
+		echo "#define GIT_TAG_NAME \"${output:1}\""
+	fi
+fi