Cleanup version symbol macros and attributes/declspecs

1) Get rid of xaliasify, xexpand and xversionify for KMP_EXPAND_NAME and
KMP_VERSION_SYMBOL. KMP_VERSION_SYMBOL is a combination of xaliasify and
xversionify.

2) Put all attribute and __declspec definitions in kmp_os.h

Differential Revision: https://reviews.llvm.org/D39516


git-svn-id: https://llvm.org/svn/llvm-project/openmp/trunk@317636 91177308-0d34-0410-b5e6-96231b3b80d8

runtime/src/ompt-specific.cpp

@@ -15,6 +15,8 @@
 #define THREAD_LOCAL __thread
 #endif
 
+#define OMPT_WEAK_ATTRIBUTE KMP_WEAK_ATTRIBUTE
+
 //******************************************************************************
 // macros
 //******************************************************************************