(xmlsec-core) Added signature result verification to the examples #1362

Job	Run time
check-ubuntu-openssl-111	1m 30s
check-mingw (MINGW64, x86_64)	17m 56s
check-ubuntu-openssl-111 (--enable-static --enable-static-linking --without-nss --without-gnutls ...	1m 7s
check-ubuntu	3m 39s
check-mingw (MINGW64, x86_64, --enable-static --enable-static-linking --enable-unicode=no --witho...	7m 56s
check-ubuntu (--enable-legacy-features --enable-ftp --enable-http)	3m 56s
check-ubuntu (--enable-static --enable-static-linking --disable-openssl3-engines --without-nss --...	2m 5s
check-msvc (mscng, unicode=yes with-dl=yes)	2m 53s
check-ubuntu (--enable-static --enable-static-linking --without-openssl --without-nss --without-g...	1m 20s
check-osx	4m 48s
check-msvc (mscng, unicode=no with-dl=no static=yes legacy-features=yes)	3m 6s
check-msvc (mscrypto)	2m 3s
check-msvc (mscrypto, unicode=no with-dl=no static=yes legacy-features=yes)	1m 59s
check-msvc (openssl-300)	6m 20s
check-msvc (openssl-300, unicode=no with-dl=no static=yes)	6m 30s
	1h 7m 8s

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