MAINT: move star imports to end of numeric.py

allows static analysis (e.g. pyflakes) to detect undefined names
Merge pull request #4816 from juliantaylor/star-import

MAINT: move star imports to end of numeric.py
DOC Polynomial example import statement updated. #3615
DOC Polynomial example import statement corrected. #3615
Merge pull request #4825 from ilam/poly

Polynomial module in Polynomial package Doc example