Mathutils doc improvements + other small things

- bpy.app moved into PyStructSequence (used by sys.float_info)
- added buildinfo into bpy.app.build_*
- bpy.ui removed (wasnt used)
- include external example files in Mathutils docs (only Mathutils and Vector are currently written)
- added support to auto document PyStructSequence's
- CMake had "'s inside all its strings.

source/blender/python/doc/examples/mathutils_vector.py

@@ -0,0 +1,55 @@
+import Mathutils
+
+# zero length vector
+vec = Mathutils.Vector(0, 0, 1)
+
+# unit length vector
+vec_a = vec.copy().normalize()
+
+vec_b = Mathutils.Vector(0, 1, 2)
+
+vec2d = Mathutils.Vector(1, 2)
+vec3d = Mathutils.Vector([1, 0, 0])
+vec4d = vec_a.copy().resize4D()
+
+# other mathutuls types
+quat = Mathutils.Quaternion()
+matrix = Mathutils.Matrix()
+
+# Comparison operators can be done on Vector classes:
+
+# greater and less then test vector length.
+vec_a > vec_b
+vec_a >= vec_b
+vec_a < vec_b
+vec_a <= vec_b
+
+# ==, != test vector values e.g. 1,2,3 != 3,2,1 even if they are the same length
+vec_a == vec_b
+vec_a != vec_b
+
+
+# Math can be performed on Vector classes
+vec_a + vec_b
+vec_a - vec_b
+vec_a * vec_b
+vec_a * 10.0
+vec_a * matrix
+vec_a * vec_b
+vec_a * quat
+-vec_a
+
+
+# You can access a vector object like a sequence
+x = vec_a[0]
+len(vec)
+vec_a[:] = vec_b
+vec2d[:] = vec3d[:2]
+
+
+# Vectors support 'swizzle' operations
+# See http://en.wikipedia.org/wiki/Swizzling_(computer_graphics)
+vec.xyz = vec.zyx
+vec.xy = vec.zw
+vec.xxy = vec.wzz
+vec.yzyz = vec.yxyx