opensc: add 0.26.1

opensc/slack-desc

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+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+      |-----handy-ruler------------------------------------------------------|
+opensc: opensc (SmartCard utilities/libraries for PKCS#11/15 compatible cards)
+opensc:
+opensc: It provides a set of libraries and utilities to access smart
+opensc: cards. Its main focus is on cards that support cryptographic
+opensc: operations, and facilitate their use in security applications such
+opensc: as mail encryption, authentication, and digital signature. OpenSC
+opensc: implements the PKCS#11 API so applications supporting this API such
+opensc: as Mozilla Firefox and Thunderbird can use it. OpenSC implements
+opensc: the PKCS#15 standard and aims to be compatible with every software
+opensc: that does so, too.
+opensc: Homepage: http://www.opensc-project.org/opensc/