Rename z_Linux_asm.s to z_Linux_asm.S

[dim]

Summary

On Unix, a .S file is normally an assembly source which must be
preprocessed with a C preprocessor, while a .s file is "plain" assembly.
The former is handled by the compiler driver (cc), the latter is
directly passed to the assembler binary (as).

Because z_Linux_asm.s is supposed to be preprocessed, rename it to .S,
so it can be automatically picked up correctly by build systems.

[AndreyChurbanov]

LGTM

runtime/src/CMakeLists.txt

if(WIN32)
     # Windows specific files
     libomp_append(LIBOMP_CXXFILES z_Windows_NT_util.cpp)
     libomp_append(LIBOMP_CXXFILES z_Windows_NT-586_util.cpp)
     libomp_append(LIBOMP_ASMFILES z_Windows_NT-586_asm.asm) # Windows assembly file
   else()
     # Unix specific files
     libomp_append(LIBOMP_CXXFILES z_Linux_util.cpp)
     libomp_append(LIBOMP_CXXFILES kmp_gsupport.cpp)
-    libomp_append(LIBOMP_ASMFILES z_Linux_asm.s) # Unix assembly file
+    libomp_append(LIBOMP_ASMFILES z_Linux_asm.S) # Unix assembly file
   endif()
   libomp_append(LIBOMP_CFILES thirdparty/ittnotify/ittnotify_static.c LIBOMP_USE_ITT_NOTIFY)
   libomp_append(LIBOMP_CXXFILES kmp_debugger.cpp LIBOMP_USE_DEBUGGER)
   libomp_append(LIBOMP_CXXFILES kmp_stats.cpp LIBOMP_STATS)
   libomp_append(LIBOMP_CXXFILES kmp_stats_timing.cpp LIBOMP_STATS)
   if(${LIBOMP_OMP_VERSION} GREATER 40 OR ${LIBOMP_OMP_VERSION} EQUAL 40)
     libomp_append(LIBOMP_CXXFILES kmp_taskdeps.cpp)
     libomp_append(LIBOMP_CXXFILES kmp_cancel.cpp)

runtime/src/z_Linux_asm.S

-//  z_Linux_asm.s:  - microtasking routines specifically
+//  z_Linux_asm.S:  - microtasking routines specifically
 //                    written for Intel platforms running Linux* OS
 
 //
 ////===----------------------------------------------------------------------===//
 ////
 ////                     The LLVM Compiler Infrastructure
 ////
 //// This file is dual licensed under the MIT and the University of Illinois Open

 // -----------------------------------------------------------------------
 // microtasking routines specifically written for IA-32 architecture and
 // Intel(R) 64 running Linux* OS
 // -----------------------------------------------------------------------
 
 // -- Machine type P
 // mark_description "Intel Corporation";
   .ident "Intel Corporation"
-// -- .file "z_Linux_asm.s"
+// -- .file "z_Linux_asm.S"
   .data
   ALIGN 4
 
 // To prevent getting our code into .data section .text added to every routine
 // definition for x86_64.
 //------------------------------------------------------------------------
 // FUNCTION __kmp_x86_cpuid
 //