Remove "FunctionName -" from docs on FunctionDecl(NFC)
Remove "FunctionName -" from docs on FunctionDecl(NFC)

Removed the repetative usage of the operator name on the
documentation for FunctionDecl.  Also reflowed some of the
comments since this changes the 80 character rule.


git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@320829 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-clang,apple/swift-clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,apple/swift-clang,llvm-mirror/clang,llvm-mirror/clang,llvm-mirror/clang,apple/swift-clang,llvm-mirror/clang