Update curl version

Author: biasedbit

lib/curl_builder.rb

@@ -60,9 +60,9 @@ module CurlBuilder
     verbose:            false,
     debug_symbols:      false,
     curldebug:          false,
-    sdk_version:        "9.2",
+    sdk_version:        "9.3",
     osx_sdk_version:    "10.11",
-    libcurl_version:    "7.47.1",
+    libcurl_version:    "7.49.1",
     architectures:      %w(i386 armv7 armv7s arm64 x86_64),
     xcode_home:         "/Applications/Xcode.app/Contents/Developer",
     run_on_dir:         Dir::pwd,