Use version() API call externally.

Author: maleadt

lib/libLLVM_extra.jl

@@ -94,7 +94,7 @@ end
 
 else
 
-if LLVM.libllvm_version < v"8.0"
+if libllvm_version < v"8.0"
 
 function LLVMAddNVVMReflectPass(PM::LLVMPassManagerRef, smversion)
     @apicall(:LLVMExtraAddNVVMReflectPass,Cvoid,(LLVMPassManagerRef,), PM)

test/debuginfo.jl

@@ -3,7 +3,7 @@
 DEBUG_METADATA_VERSION()
 
 Context() do ctx
-    if LLVM.libllvm_version < v"8.0"
+    if LLVM.version() < v"8.0"
         mod = parse(LLVM.Module,  """
             define void @fun() !dbg !5 {
             top:

test/transform.jl

@@ -68,7 +68,7 @@ ModulePassManager() do pm
     scoped_no_alias_aa!(pm)
     basic_alias_analysis!(pm)
 
-    if LLVM.libllvm_version < v"8.0"
+    if LLVM.version() < v"8.0"
         bbvectorize!(pm)
     end
     loop_vectorize!(pm)