Feature/mbedtls (#84)

* try to import mbedtls and build it

* add stubs socket class

* some boilterplate, read and write function implemented

* more boilterplate / current error in handshake because no CA cert is setup

* add something so skip ca verification, can ws curl https://google.com !

* cleanup / close implemented

* tweak CMakefiles

* typo in include

* update readme

* disable unittests

third_party/mbedtls/crypto/scripts/tmp_ignore_makefiles.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+
+# Temporarily (de)ignore Makefiles generated by CMake to allow easier
+# git development
+
+IGNORE=""
+
+# Parse arguments
+#
+until [ -z "$1" ]
+do
+  case "$1" in
+    -u|--undo)
+      IGNORE="0"
+      ;;
+    -v|--verbose)
+      # Be verbose
+      VERBOSE="1"
+      ;;
+    -h|--help)
+      # print help
+      echo "Usage: $0"
+      echo -e "  -h|--help\t\tPrint this help."
+      echo -e "  -u|--undo\t\tRemove ignores and continue tracking."
+      echo -e "  -v|--verbose\t\tVerbose."
+      exit 1
+      ;;
+    *)
+      # print error
+      echo "Unknown argument: '$1'"
+      exit 1
+      ;;
+  esac
+  shift
+done
+
+if [ "X" = "X$IGNORE" ];
+then
+  [ $VERBOSE ] && echo "Ignoring Makefiles"
+  git update-index --assume-unchanged Makefile library/Makefile programs/Makefile tests/Makefile
+else
+  [ $VERBOSE ] && echo "Tracking Makefiles"
+  git update-index --no-assume-unchanged Makefile library/Makefile programs/Makefile tests/Makefile
+fi