sdist and install now work

next step is using a custom data dir, and falling back on the package
data dir. Also, fixing --version.

overviewer_core/util.py

@@ -0,0 +1,52 @@
+#    This file is part of the Minecraft Overviewer.
+#
+#    Minecraft Overviewer is free software: you can redistribute it and/or
+#    modify it under the terms of the GNU General Public License as published
+#    by the Free Software Foundation, either version 3 of the License, or (at
+#    your option) any later version.
+#
+#    Minecraft Overviewer is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
+#    Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License along
+#    with the Overviewer.  If not, see <http://www.gnu.org/licenses/>.
+
+"""
+Misc utility routines used by multiple files that don't belong anywhere else
+"""
+
+import imp
+import os
+import os.path
+import sys
+
+def get_program_path():
+    if hasattr(sys, "frozen") or imp.is_frozen("__main__"):
+        return os.path.dirname(sys.executable)
+    else:
+        try:
+            # normally, we're in ./overviewer/util.py
+            # we want ./overviewer/data/
+            return os.path.join(os.path.dirname(__file__), 'data')
+        except NameError:
+            return os.path.dirname(sys.argv[0])
+
+
+
+def findGitVersion():
+    if os.path.exists(".git"):
+        with open(os.path.join(".git","HEAD")) as f:
+            data = f.read().strip()
+        if data.startswith("ref: "):
+            with open(os.path.join(".git", data[5:])) as g:
+                return g.read().strip()
+        else:
+            return data
+    else:
+        try:
+            import overviewer_version
+            return overviewer_version.VERSION
+        except:
+            return "unknown"