Added osgpresentation example as a test bed for new osgPresentation object model.

First cut of example test bed is to test how easy it is to build against Lua, V8 and Python for purposes of running embedded scripts.

CMakeModules/FindV8.cmake

@@ -0,0 +1,45 @@
+# Locate V8
+# This module defines
+# V8_LIBRARY
+# V8_FOUND, if false, do not try to link to gdal
+# V8_INCLUDE_DIR, where to find the headers
+#
+# $V8_DIR is an environment variable that would
+# correspond to the ./configure --prefix=$V8_DIR
+#
+# Created by Robert Osfield (based on FindFLTK.cmake)
+
+FIND_PATH(V8_INCLUDE_DIR v8.h
+    $ENV{V8_DIR}/include
+    $ENV{V8_DIR}
+    ~/Library/Frameworks
+    /Library/Frameworks
+    /usr/local/include
+    /usr/include
+    /sw/include # Fink
+    /opt/local/include # DarwinPorts
+    /opt/csw/include # Blastwave
+    /opt/include
+    /usr/freeware/include
+)
+
+FIND_LIBRARY(V8_LIBRARY
+    NAMES v8 libv8
+    PATHS
+    $ENV{V8_DIR}/lib
+    $ENV{V8_DIR}
+    ~/Library/Frameworks
+    /Library/Frameworks
+    /usr/local/lib
+    /usr/lib
+    /sw/lib
+    /opt/local/lib
+    /opt/csw/lib
+    /opt/lib
+    /usr/freeware/lib64
+)
+
+SET(V8_FOUND "NO")
+IF(V8_LIBRARY AND V8_INCLUDE_DIR)
+    SET(V8_FOUND "YES")
+ENDIF()