configure.ac and src/include.am: add ENABLED_ARM_THUMB, BUILD_ARM_THUMB, BUILD_ARM_NONTHUMB, ENABLED_ARM_64, BUILD_ARM_64, ENABLED_ARM_32. and BUILD_ARM_32, and use them to gate building of ARM asm files, to fix "ISO C forbids an empty translation unit" warnings (the warning only affects inline asm files, but the gating is deployed more widely).
examples/pem/pem.c: fix stdio stream leaks.
src/ssl.c and src/ssl_load.c: suppress concurrency-mt-unsafe around getenv(). getenv() is threadsafe as long as no threads putenv() or setenv().
wolfssl/openssl/asn1.h: add parentheses to fix bugprone-macro-parentheses in ASN1_EX_TEMPLATE_TYPE(), and suppress misfiring bugprone-macro-parentheses around IMPLEMENT_ASN1_FUNCTIONS().
tests/api.c: add error_test() adapted from wolfcrypt/test/test.c, checking all error strings for expected presence/absence and length, called from existing test_wolfSSL_ERR_strings().
wolfssl/ssl.h, wolfssl/error-ssl.h, and wolfssl/wolfcrypt/error-crypt.h:
* move several negative error return codes from ssl.h to error-ssl.h,
* renumber them to conform to existing sequence, and
* include error-ssl.h from ssl.h;
* add special-case WOLFSSL_DEBUG_TRACE_ERROR_CODES macros for WOLFSSL_FAILURE;
* add missing WOLFSSL_API attribute to wc_backtrace_render().
add numerous WC_NO_ERR_TRACE()s to operand error code uses, cleaning up error traces in general, and particularly when WOLFSSL_DEBUG_TRACE_ERROR_CODES_ALWAYS.
* crypto lib (36),
* crypto test&benchmark (20),
* TLS lib (179),
* examples (122),
* linuxkm (3),
* tests/api.c (2272).
* added POSIX definitions for XFEOF(), XFERROR(), and XCLEARERR(), currently with no-op fallbacks for !POSIX.
* added missing file handle checks in testsuite/testsuite.c:file_test() and tests/utils.h:copy_file().
* added fixes and suppression around tests/api.c:test_wolfSSL_SMIME_read_PKCS7().
* added various fixes in examples/asn1/asn1.c and examples/pem/pem.c.
PEM example converts PEM to DER and DER to PEM.
Supports encrypting DER and writing out as PEM.
Added better support for 40-bit RC2-CBC PBE.
Added AES-128-CBC encryption support with PKCS#5v2.
Fixed handling of iterations to support writing 24-bit values.
Declared enum types for pass to PKCS#8 encryption APIs.
Add more DER and PEM files to certs directory.
Add testing of 'pem' with pem.test script.
