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/.gitignore

@@ -0,0 +1,24 @@
+*.sln
+*.vcxproj
+
+*.log
+/test_suite*
+data_files/mpi_write
+data_files/hmac_drbg_seed
+data_files/ctr_drbg_seed
+data_files/entropy_seed
+
+include/alt-extra/psa/crypto_platform_alt.h
+include/alt-extra/psa/crypto_struct_alt.h
+include/test/instrument_record_status.h
+
+src/libmbed*
+
+libtestdriver1/*
+
+###START_GENERATED_FILES###
+# Generated source files
+/suites/*.generated.data
+/suites/test_suite_psa_crypto_storage_format.v[0-9]*.data
+/suites/test_suite_psa_crypto_storage_format.current.data
+###END_GENERATED_FILES###