Support for PC platform (#12)

* improvements for cross-platform compiling

* moved tactility-core to libs/

* splitup improvements

* remove git/gitmodules from freertos

* better platformbetter platform checks

* added build scripts

* delete mbedtls

* re-add mbedtls

* fixes and improvements

* added pc build

* simplify build scripts

* revert build scrpit

* updated builds

* fix for pc

* fix for pc

* fix for build

libs/mbedtls/tests/data_files/parse_input/crl-ec-sha224.pem

@@ -0,0 +1,10 @@
+-----BEGIN X509 CRL-----
+MIIBcDCB9wIBATAKBggqhkjOPQQDATA+MQswCQYDVQQGEwJOTDERMA8GA1UEChMI
+UG9sYXJTU0wxHDAaBgNVBAMTE1BvbGFyc3NsIFRlc3QgRUMgQ0EXDTEzMDkyNDE2
+MzEwOFoXDTIzMDkyMjE2MzEwOFowFDASAgEKFw0xMzA5MjQxNjI4MzhaoHIwcDBu
+BgNVHSMEZzBlgBSdbSAkSQE/K8t4tRm8fiTJ2/s2fKFCpEAwPjELMAkGA1UEBhMC
+TkwxETAPBgNVBAoTCFBvbGFyU1NMMRwwGgYDVQQDExNQb2xhcnNzbCBUZXN0IEVD
+IENBggkAwUPifmJDzOgwCgYIKoZIzj0EAwEDaAAwZQIwbn+i0dOest0IJGzuqBLA
+V5nscZPvHjDV6lWsSwurS4LC/Uv/qWteuMCp3OqQRJHcAjEA6KA0dibovfL1WKFo
+C8jUGxlMfHeWDRkqMfcjjgIpky7v50sKtDOfmFJn3HFUbiKp
+-----END X509 CRL-----