ofImage: fix clone for empty mom. Closes #2437
changed deployment target to 10.6 and small bugfix to PG xcodeProject generator
Merge branch 'develop' of github.com:openframeworks/openFrameworks into shaderExamples
Merge branch 'shaderExamples' of github.com:wasawi/openFrameworks into shaderExamples
shader examples: fix capitalization for include
shader 03 example is done.
Merge branch 'shaderExamples' of https://github.com/openframeworks/openFrameworks into shaderExamples
changed back to standard window size.
alpha masking example for GL3 is working.
example 05 shaders for GL2 are working.
example 05, ES2 shader is working.
fixed order of multiplication in shader example 03.
added the basis for shader example 06 - multi textures.
merged with upstream.