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/.travis.yml

@@ -0,0 +1,43 @@
+language: c
+compiler:
+- clang
+- gcc
+sudo: false
+cache: ccache
+
+# blocklist
+branches:
+  except:
+  - development-psa
+  - coverity_scan
+
+script:
+- tests/scripts/recursion.pl library/*.c
+- tests/scripts/check-generated-files.sh
+- tests/scripts/check-doxy-blocks.pl
+- tests/scripts/check-names.sh
+- tests/scripts/check-files.py
+- tests/scripts/doxygen.sh
+- cmake -D CMAKE_BUILD_TYPE:String="Check" .
+- make
+- make test
+- programs/test/selftest
+- tests/scripts/test-ref-configs.pl
+- tests/scripts/curves.pl
+env:
+  global:
+    - SEED=1
+    - secure: "barHldniAfXyoWOD/vcO+E6/Xm4fmcaUoC9BeKW+LwsHqlDMLvugaJnmLXkSpkbYhVL61Hzf3bo0KPJn88AFc5Rkf8oYHPjH4adMnVXkf3B9ghHCgznqHsAH3choo6tnPxaFgOwOYmLGb382nQxfE5lUdvnM/W/psQjWt66A1+k="
+
+addons:
+  apt:
+    packages:
+    - doxygen
+    - graphviz
+  coverity_scan:
+    project:
+      name: "ARMmbed/mbedtls"
+    notification_email: simon.butcher@arm.com
+    build_command_prepend:
+    build_command: make
+    branch_pattern: coverity_scan