Rename Align -> Alignment.

I think it is me who named these variables, but I always find that
they are slightly confusing because align is a verb.
Adding four letters is worth it.

llvm-svn: 272984
diff --git a/lld/ELF/LinkerScript.cpp b/lld/ELF/LinkerScript.cpp
index 5387b02..cf1f457 100644
--- a/lld/ELF/LinkerScript.cpp
+++ b/lld/ELF/LinkerScript.cpp
@@ -239,14 +239,14 @@
 
       if ((Sec->getFlags() & SHF_TLS) && Sec->getType() == SHT_NOBITS) {
         uintX_t TVA = Dot + ThreadBssOffset;
-        TVA = alignTo(TVA, Sec->getAlign());
+        TVA = alignTo(TVA, Sec->getAlignment());
         Sec->setVA(TVA);
         ThreadBssOffset = TVA - Dot + Sec->getSize();
         continue;
       }
 
       if (Sec->getFlags() & SHF_ALLOC) {
-        Dot = alignTo(Dot, Sec->getAlign());
+        Dot = alignTo(Dot, Sec->getAlignment());
         Sec->setVA(Dot);
         Dot += Sec->getSize();
         continue;