move `./typetests` to `./tests/typetests` #119

Job	Run time
stubtest-all	56s
lint-and-typecheck	1m 11s
stubtest (scipy.cluster)	53s
stubtest (scipy.constants)	46s
stubtest (scipy.datasets)	43s
stubtest (scipy.fft)	53s
stubtest (scipy.fftpack)	48s
stubtest (scipy.integrate)	52s
stubtest (scipy.interpolate)	46s
stubtest (scipy.io)	44s
stubtest (scipy.linalg)	52s
stubtest (scipy.misc)	46s
stubtest (scipy.odr)	44s
stubtest (scipy.optimize)	1m 4s
stubtest (scipy.special)	46s
stubtest (scipy.stats.contingency scipy.stats.distributions)	46s
stubtest (scipy.version)	51s
	14m 21s

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