[clang-tools-extra] [clang-tidy] Add `-std` argument in `check_clang_tidy.py` for C files (PR #150791)

[Baranov Victor via cfe-commits]

================
@@ -5,14 +5,14 @@
 // parsing and preprocessor state will not have that case.
 // UNSUPPORTED: target={{.*-(ps4|ps5)}}
 //
-// RUN: %check_clang_tidy -check-suffix=WITH-ANNEX-K            %s 
bugprone-unsafe-functions %t -- -- -D__STDC_LIB_EXT1__=1 
-D__STDC_WANT_LIB_EXT1__=1
-// RUN: %check_clang_tidy -check-suffix=WITHOUT-ANNEX-K         %s 
bugprone-unsafe-functions %t -- -- -U__STDC_LIB_EXT1__   
-U__STDC_WANT_LIB_EXT1__
-// RUN: %check_clang_tidy -check-suffix=WITHOUT-ANNEX-K         %s 
bugprone-unsafe-functions %t -- -- -D__STDC_LIB_EXT1__=1 
-U__STDC_WANT_LIB_EXT1__
-// RUN: %check_clang_tidy -check-suffix=WITHOUT-ANNEX-K         %s 
bugprone-unsafe-functions %t -- -- -U__STDC_LIB_EXT1__   
-D__STDC_WANT_LIB_EXT1__=1
-// RUN: %check_clang_tidy -check-suffix=WITH-ANNEX-K-CERT-ONLY  %s 
bugprone-unsafe-functions %t -- \
+// RUN: %check_clang_tidy -std=c11-or-later -check-suffix=WITH-ANNEX-K         
   %s bugprone-unsafe-functions %t -- -- -D__STDC_LIB_EXT1__=1 
-D__STDC_WANT_LIB_EXT1__=1
+// RUN: %check_clang_tidy -check-suffix=WITHOUT-ANNEX-K                        
   %s bugprone-unsafe-functions %t -- -- -U__STDC_LIB_EXT1__   
-U__STDC_WANT_LIB_EXT1__
+// RUN: %check_clang_tidy -check-suffix=WITHOUT-ANNEX-K                        
   %s bugprone-unsafe-functions %t -- -- -D__STDC_LIB_EXT1__=1 
-U__STDC_WANT_LIB_EXT1__
+// RUN: %check_clang_tidy -check-suffix=WITHOUT-ANNEX-K                        
   %s bugprone-unsafe-functions %t -- -- -U__STDC_LIB_EXT1__   
-D__STDC_WANT_LIB_EXT1__=1
----------------
vbvictor wrote:

I'm not in favor of artificially long lines assuming we have 80-line limit 
standart (that doesn't enforced in tests but still..)
```suggestion
// RUN: %check_clang_tidy -check-suffix=WITHOUT-ANNEX-K %s 
bugprone-unsafe-functions %t -- -- -U__STDC_LIB_EXT1__   
-U__STDC_WANT_LIB_EXT1__
// RUN: %check_clang_tidy -check-suffix=WITHOUT-ANNEX-K %s 
bugprone-unsafe-functions %t -- -- -D__STDC_LIB_EXT1__=1 
-U__STDC_WANT_LIB_EXT1__
// RUN: %check_clang_tidy -check-suffix=WITHOUT-ANNEX-K %s 
bugprone-unsafe-functions %t -- -- -U__STDC_LIB_EXT1__   
-D__STDC_WANT_LIB_EXT1__=1
```

https://github.com/llvm/llvm-project/pull/150791
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