Add basic zlib support to LLVM. This would allow to use compression/uncompression in selected LLVM tools.

llvm-svn: 180083
diff --git a/llvm/cmake/modules/LLVMConfig.cmake.in b/llvm/cmake/modules/LLVMConfig.cmake.in
index c43119e..f0b8c14 100644
--- a/llvm/cmake/modules/LLVMConfig.cmake.in
+++ b/llvm/cmake/modules/LLVMConfig.cmake.in
@@ -22,12 +22,15 @@
 
 set(LLVM_ENABLE_THREADS @LLVM_ENABLE_THREADS@)
 
+set(LLVM_ENABLE_ZLIB @LLVM_ENABLE_ZLIB@)
+
 set(LLVM_NATIVE_ARCH @LLVM_NATIVE_ARCH@)
 
 set(LLVM_ENABLE_PIC @LLVM_ENABLE_PIC@)
 
 set(HAVE_LIBDL @HAVE_LIBDL@)
 set(HAVE_LIBPTHREAD @HAVE_LIBPTHREAD@)
+set(HAVE_LIBZ @HAVE_LIBZ@)
 set(LLVM_ON_UNIX @LLVM_ON_UNIX@)
 set(LLVM_ON_WIN32 @LLVM_ON_WIN32@)