Silence MSVC warnings about "unsafe" standard C functions in console apps

Within the libraries themselves, we use other wrapper functions to
make sure the functions are used safely, but this wrapper layer isn't
available outside of the library in the console apps. The usage of these
functions is safe here, so silence the warnings.

This gets rid of all warnings when building with MSVC in 32 bit mode,
making it much easier to spot new warnings.
Use _CRT_SECURE_NO_WARNINGS to avoid warnings in the encoder version of read_config.cpp as well

This is clearer and requires less code than using the pragmas for
disabling warnings.
Merge pull request #675 from mstorsjo/silence-crt-unsafe-warnings

Silence MSVC warnings about "unsafe" standard C functions in console apps
restore default values
Merge pull request #679 from ruil2/enc_ltr

restore default values
update the default value for bPrefixNalAddingCtrl and iLoopFilterDisableIdc
add track sps change for each layer
Merge pull request #682 from ruil2/enc_test

update the default value for bPrefixNalAddingCtrl and iLoopFilterDisableIdc
Don't override the deblocking setting in the encoder test

Since this is on by default now, we don't need a separate test
that has it enabled. Thus we can now remove one of the encoder
tests.

By not overriding the deblocking setting at all, the hash
changes for the other tests that use SEncParamExt.
Merge pull request #684 from mstorsjo/remove-deblocking-test

Don't override the deblocking setting in the encoder test
decMbAux UT bug fix
Merge pull request #685 from licaiguo/tracklayersps

add track sps change for each layer
divide copy_mb functions into new file for decoder use from encoder and add files for EC in decoder only.
Merge pull request #687 from JuannyWang/decMbAuxBugFix

[Encoder UT] decMbAux UT bug fix
Merge pull request #689 from huili2/add_file_CopyMB_EC

divide copy_mb functions into new file for decoder use from encoder and ...
update ios project files
Merge pull request #692 from licaiguo/update-ios-project

update ios project files
Merge branch 'master' of https://github.com/cisco/openh264