Added generic folder of libclc to repo

libclc/generic/include/clc/as_type.h

libclc/generic/include/clc/atomic/atomic_add.h

libclc/generic/include/clc/atomic/atomic_dec.h

libclc/generic/include/clc/atomic/atomic_decl.inc

libclc/generic/include/clc/atomic/atomic_inc.h

libclc/generic/include/clc/atomic/atomic_sub.h

...c/include/clc/cl_khr_global_int32_base_atomics/atom_add.h

...c/include/clc/cl_khr_global_int32_base_atomics/atom_dec.h

...c/include/clc/cl_khr_global_int32_base_atomics/atom_inc.h

...c/include/clc/cl_khr_global_int32_base_atomics/atom_sub.h

libclc/generic/include/clc/clc.h

libclc/generic/include/clc/clcfunc.h

libclc/generic/include/clc/clctypes.h

libclc/generic/include/clc/clcversion.h

libclc/generic/include/clc/common/sign.h

libclc/generic/include/clc/convert.h

libclc/generic/include/clc/float/definitions.h

libclc/generic/include/clc/geometric/cross.h

libclc/generic/include/clc/geometric/distance.h

libclc/generic/include/clc/geometric/dot.h