[bash-autocompletion] Delete space after flags which has '=' prefix
[bash-autocompletion] Delete space after flags which has '=' prefix

Summary:
This is patch for bash completion for clang project.
We don't need space when completing options like "-stdlib=".

Differential Revision: https://reviews.llvm.org/D34594

git-svn-id: ffe668792ed300d6c2daa1f6eba2e0aa28d7ec6c@306258 91177308-0d34-0410-b5e6-96231b3b80d8

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