[test-suite] Enable more tests from gcc test suite

[xbolva00]

Summary

Clang now (rG0daf27302518) supports builtins for malloc, realloc, calloc, free, sprintf, etc.. so enable these tests as they work fine.

See eg.: https://godbolt.org/z/ExbYdqaaM

[xbolva00]

Enable builtin-bitops-1.c # builtin_clrsb, builtin_clrsbl, __builtin_clrsbll as it can pass too.

[xbolva00]

Ping

[lenary]

I hope to do a test suite run today at some point to validate this. It looks right, but I would like to feel more confident about landing this. I'll get back to you today.

SingleSource/Regression/C/gcc-c-torture/execute/CMakeLists.txt

file(GLOB UnsupportedTests CONFIGURE_DEPENDS
   align-nest.c
   pr41935.c
   pr82210.c
 
   # Initialization of flexible array member
   pr28865.c
 
   # GCC Extension: __builtin_*
-  20071018-1.c       # __builtin_malloc
-  20071120-1.c       # __builtin_malloc
-  builtin-bitops-1.c # __builtin_clrsb, __builtin_clrsbl, __builtin_clrsbll
-  pr36765.c          # __builtin_malloc
   pr39228.c          # __builtin_isinff, __builtin_isinfl
-  pr43008.c          # __builtin_malloc
   pr47237.c          # __builtin_apply, __builtin_apply_args
-  pr78586.c          # __builtin_sprintf
-  pr79327.c          # __builtin_sprintf
-  pr84339.c          # __builtin_malloc, __builtin_free
-  pr84478.c          # __builtin_malloc
   pr85331.c          # __builtin_shuffle
-  strlen-7.c         # __builtin_malloc
   va-arg-pack-1.c    # __builtin_va_arg_pack
 
   # Clang does not support 'DD' suffix on floating constant
   pr80692.c
 
   # Test requires compiler to recognise llabs without including <inttypes.h> -
   # clang will only recognise this function if the header is included.
   20021127-1.c