Update course code to suite for new c++ standard and SuiteSpares type name#4

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milkpku wants to merge 3 commits intodgpdec:masterfrom milkpku:update

+24-22

Commits on Sep 7, 2016

add missing <iostream> to include/DenseMatrix.h and include/SpraseMatrix.h
milkpku
committed
substitude 'UF_long' with 'SuiteSprase_long' since UF_long is no longer used in SuiteSprase
milkpku
committed
modified makefile to suite Linux, and add -lumfpack to link libufmpack.so
milkpku
committed