added missing Info.plist for OSX package

added libexec dir to OSX deployment cmake script
fixed path to python library for OSX packaging

cmake_support/CopyDependencies.cmake

@@ -655,6 +655,7 @@ function(copy_python include_path version new_binary_path)
 
   get_filename_component(real_python_include_path ${include_path} REALPATH)
   get_filename_component(python_root_dir ${real_python_include_path}/../.. REALPATH) 
+  file(COPY ${python_root_dir}/Resources/Python.app/Contents/MacOS/Python DESTINATION ${CMAKE_INSTALL_PREFIX})
   file(COPY ${python_root_dir}/${LIB_DIR}/python${version}/ DESTINATION ${CMAKE_INSTALL_PREFIX}/${LIB_DIR}/python${version})
   file(GLOB  py_config_files "${include_path}/pyconfig*.h")
   file(COPY ${py_config_files} DESTINATION ${CMAKE_INSTALL_PREFIX}/include/python${version})

deployment/macos/CMakeLists.txt

@@ -15,6 +15,7 @@ set(CPACK_PACKAGE_INSTALL_DIRECTORY "openstructure ${OST_VERSION_STRING}" )
 install(CODE "
   if(NOT ${CMAKE_INSTALL_PREFIX} STREQUAL \${CMAKE_INSTALL_PREFIX})
     set(LIB_DIR ${LIB_DIR}) #pass libdir variable in install code block
+    set(LIBEXEC_PATH ${LIBEXEC_PATH})#pass libexec_path variable in install code block
     set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${PROJECT_SOURCE_DIR}/cmake_support)
     include(CopyDependencies)
   

deployment/macos/Info.plist

+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" 
+    "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>English</string>
+  <key>CFBundleExecutable</key>
+  <string>dng</string>
+  <key>CFBundleName</key>
+  <string>DNG</string>  
+  <key>CFBundleDisplayName</key>
+  <string>DNG</string>  
+  <key>CFBundleHelpBookFolder</key>
+  <string>OpenStructure Manual</string>
+  <key>CFBundleHelpBookName</key>
+  <string>OpenStructure Help</string>
+  <key>CFBundleIconFile</key>
+  <string>DNG.icns</string>
+  <key>CFBundleIdentifier</key>
+  <string>org.openstructure.OpenStructure</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundlePackageType</key>
+  <string>APPL</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string></string>
+  <key>NSMainNibFile</key>
+  <string>MainMenu</string>
+  <key>NSPrincipalClass</key>
+  <string>NSApplication</string>
+</dict>
+</plist>