added git commit information to program version

configure.in

 dnl Process this file with autoconf to produce a configure script.
 
-AC_INIT(graph-tool, 1.1.3devel)
+AC_INIT(graph-tool, 1.2.0devel)
 AC_CONFIG_SRCDIR(src/graph-tool)
 AM_INIT_AUTOMAKE
 AM_PROG_CC_C_O
@@ -190,7 +190,7 @@ AC_DEFINE_UNQUOTED([COPYRIGHT],
     "Copyright (C) 2007 Tiago de Paula Peixoto\nThis is free software; see the source for copying conditions.  There is NO\nwarranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.",
 	[copyright info])
 
-AC_DEFINE([SVN_REVISION], "esyscmd(svnversion -n .)", [svn revision number])
+AC_DEFINE([GIT_COMMIT], "esyscmd(git show | head -n 1 | sed 's/commit //' | tr -d '\n')", [git commit hash])
 
 dnl fi
 AC_OUTPUT([

src/graph/graph_bind.cc

@@ -244,7 +244,7 @@ struct LibInfo
     string GetName()      const {return PACKAGE_NAME;}
     string GetAuthor()    const {return AUTHOR;}
     string GetCopyright() const {return COPYRIGHT;}
-    string GetVersion()   const {return VERSION " (r" SVN_REVISION ")";}
+    string GetVersion()   const {return VERSION " (commit " GIT_COMMIT ")";}
     string GetLicense()   const {return "GPL version 3 or above";}
 };