Rename AlignAttribute to IntAttribute

Currently the only kind of integer IR attributes that we have are alignment
attributes, and so the attribute kind that takes an integer parameter is called
AlignAttr, but that will change (we'll soon be adding a dereferenceable
attribute that also takes an integer value). Accordingly, rename AlignAttribute
to IntAttribute (class names, enums, etc.).

No functionality change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213352 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Bitcode/Reader/BitcodeReader.cpp

@@ -683,7 +683,7 @@ std::error_code BitcodeReader::ParseAttributeGroupBlock() {
             return EC;
 
           B.addAttribute(Kind);
-        } else if (Record[i] == 1) { // Align attribute
+        } else if (Record[i] == 1) { // Integer attribute
           Attribute::AttrKind Kind;
           if (std::error_code EC = ParseAttrKind(Record[++i], &Kind))
             return EC;