[clang-tidy] Add Apple prefix acronyms to objc-property-declaration

Summary:
This adds a few common Apple first-party API prefixes as acronyms to
`objc-property-declaration`.

Here's a list showing where these come from:

http://nshipster.com/namespacing/

Test Plan: New tests added. Ran tests with:
  % make -j16 check-clang-tools

Reviewers: Wizard, hokein

Subscribers: klimek, xazax.hun, cfe-commits

Differential Revision: https://reviews.llvm.org/D46206

llvm-svn: 331267
diff --git a/clang-tools-extra/clang-tidy/objc/PropertyDeclarationCheck.cpp b/clang-tools-extra/clang-tidy/objc/PropertyDeclarationCheck.cpp
index ae9ca01..fd15df9 100644
--- a/clang-tools-extra/clang-tidy/objc/PropertyDeclarationCheck.cpp
+++ b/clang-tools-extra/clang-tidy/objc/PropertyDeclarationCheck.cpp
@@ -45,11 +45,17 @@
     "ARGB",
     "ASCII",
     "BGRA",
+    "CA",
+    "CF",
+    "CG",
+    "CI",
+    "CV",
     "CMYK",
     "DNS",
     "FPS",
     "FTP",
     "GIF",
+    "GL",
     "GPS",
     "GUID",
     "HD",
@@ -65,6 +71,7 @@
     "LZW",
     "MDNS",
     "MIDI",
+    "NS",
     "OS",
     "PDF",
     "PIN",
@@ -81,6 +88,7 @@
     "RPC",
     "RTF",
     "RTL",
+    "SC",
     "SDK",
     "SSO",
     "TCP",