ccid-emulator: Build libopensc from source code

There is no longer an external (or stable) interface for libopensc.
Linking this program with an existing version of libopensc that is
pre-installed in the system library paths is not practical.

However, a specific snapshot of the OpenSC source code is embedded
here as a Git submodule (and included in the source distributions).
Build libopensc from this and statically link it into this program.
(Options such as '--enable-openpace' that are passed to ./configure
will be forwarded to control the build configuration of libopensc.)

Remove code that existed for compatibility when dynamically linking
with older versions of libopensc.

ccid/doc/Makefile.am

@@ -13,7 +13,6 @@ do_subst = $(SED) \
 	   -e 's,[@]libdir[@],$(libdir),g' \
 	   -e 's,[@]includedir[@],$(includedir),g' \
 	   -e 's,[@]VERSION[@],$(VERSION),g' \
-	   -e 's,[@]OPENSC_LIBS[@],$(OPENSC_LIBS),g' \
 	   -e 's,[@]abs_top_srcdir[@],$(abs_top_srcdir),g' \
 	   -e 's,[@]top_srcdir[@],$(top_srcdir),g'
 

ccid/doc/README.txt.in

@@ -265,6 +265,9 @@ modern Windows and Unix-like systems by default.
 
 .. include:: autotools.txt
 
+The @PACKAGE_NAME@ depends on :program:`libopensc`, which is automatically
+built from a snapshot of the OpenSC source code and then statically linked.
+
 
 =================
 Hints on GadgetFS
@@ -302,33 +305,6 @@ loading the module, you maybe want to check out `this patch
 <http://comments.gmane.org/gmane.linux.usb.general/47440>`_.
 
 
-===============
-Hints on OpenSC
-===============
-
-@PACKAGE_NAME@ needs the OpenSC components to be
-installed (especially :file:`libopensc.so`). Here is an example of how to get
-the standard installation of OpenSC without |PACE|::
-
-    PREFIX=/tmp/install
-    VSMARTCARD=$PWD/vsmartcard
-    git clone https://github.com/frankmorgner/vsmartcard.git $VSMARTCARD
-    cd $VSMARTCARD
-    git submodule init
-    git submodule update
-    cd $VSMARTCARD/ccid/src/opensc
-    autoreconf --verbose --install
-    ./configure --prefix=$PREFIX
-    make install && cd -
-
-Now :file:`libopensc.so` should be located in ``$PREFIX/lib``. Here is how to
-configure the @PACKAGE_NAME@ to use it::
-
-    cd $VSMARTCARD/ccid
-    ./configure --prefix=$PREFIX OPENSC_LIBS="-L$PREFIX/lib -lopensc"
-    make install && cd -
-
-
 *****
 Usage
 *****