Better management of git branch in configure.ac

configure.ac

-define([gitversion], esyscmd([sh -c "git log --oneline | wc -l | tr -d '\n'"]))
-define([gitbranch], esyscmd([sh -c "git branch | grep \* | cut -d ' ' -f2"]))
 AC_INIT([lustrec], 1.5-gitversion, [ploc@garoche.net])
+
+gitbranch=`git branch | grep \* | sed "s/\*[ ]*//"`
+define([gitversion], esyscmd([sh -c "git log --oneline | wc -l | tr -d '\n'"]))
+#define([gitbranch], esyscmd([sh -c "git branch | grep \* | cut -d ' ' -f2"]))
+
 AC_SUBST(VERSION_CODENAME, "Xia/Shao Kang-dev")
-AC_SUBST(GITBRANCH, gitbranch)
+AC_SUBST(GITBRANCH, "$gitbranch")
 # Next release will be
 #AC_INIT([lustrec], [1.6], [ploc@garoche.net])
 #AC_SUBST(VERSION_CODENAME, "Xia/Zhu")