Integrate the interesting parts of the CMSIS 3.01 (r3p1) DSP library

...lib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_abs_f32.c

...lib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_abs_q15.c

...lib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_abs_q31.c

...hlib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_abs_q7.c

...lib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_add_f32.c

...lib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_add_q15.c

...lib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_add_q31.c

...hlib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_add_q7.c

...MSIS/DSP_Lib/Source/BasicMathFunctions/arm_dot_prod_f32.c

...MSIS/DSP_Lib/Source/BasicMathFunctions/arm_dot_prod_q15.c

...MSIS/DSP_Lib/Source/BasicMathFunctions/arm_dot_prod_q31.c

...CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_dot_prod_q7.c

...ib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_mult_f32.c

...ib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_mult_q15.c

...ib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_mult_q31.c

...lib/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_mult_q7.c

.../CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_negate_f32.c

.../CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_negate_q15.c

.../CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_negate_q31.c

...b/CMSIS/DSP_Lib/Source/BasicMathFunctions/arm_negate_q7.c