errors about OpenACC C 1.0

[taxift]

These are errors other than my pull reqest.

Language: C
Environmet: PGI 20.4 and NVHPC 21.2, NVIDIA V100

When testing OpenACC 1.0, the compilation T3 of kernels_copyin.c fail about no declare "devtest". Maybe T3 does not think about OpenACC 1.0-2.4 because "devtest" is declared T2 and T2 only supports v2.5-2.7.

parallel_loop_async.c has an error. This test supports v1.0-2.7. But "reduction(+:errors[x])" is not supported with v1.0-2.6.

Compilations of Following files fail about long double type.

• parallel_loop_reduction_add_general_type_check_pt2.c
• parallel_loop_reduction_add_general_type_check_pt3.c

parallel_loop_reduction_add_general_type_check_pt1.c can be compiled. But the execution of T1 returns an error.
But, when it was compiled by GCC, the execution succeeded. So an error of this file are probably caused PGI and NVHPC.