fix correctness bug of csyr2k and zsyr2k when beta == (0,0); also fix bug in complex + for calculating reference results in ktest
Merge pull request #41 from TimmyLiu/develop

a couple bug fixes related to c/z syr2k
enable the tune tool to test all the workgroup sizes that are multiples of wavefront but no bigger than the max workgroup size, instead of only testing the workgroup size = wavefront size
increase the tuning converage for one dimension of the workgroup size bigger than 32
s/CMAKE_SOURCE_DIR/PROJECT_SOURCE_DIR/ in library/CMakeLists.txt.

Do so to allow another parent CMake project to be able to successfully
call add_subdirectory(clBLAS) on this one.
Merge pull request #46 from robertsdionne/develop

s/CMAKE_SOURCE_DIR/PROJECT_SOURCE_DIR/ in library/CMakeLists.txt.
Merge pull request #47 from TimmyLiu/develop

enhancement of tune tool for better sgemm performance