package/civetweb: bump version to 1.11

package/civetweb: bump version to 1.11

v1.11 now has library and header install targets for use by apps that
serve pages.  The config changes allow enabling the civetweb webserver
app binary and/or libs and headers.

The C++ interface option is automatically enabled if C++ support is
available.

The civetweb Makefile sets -fPIC in CFLAGS when linking shared
objects, but not when compiling the objects used in the library
resulting in a link failure, so add -fPIC to COPT which is added
to CFLAGS in its Makefile.

The typo patch has already been incorporated upstream, so it was
removed.

Signed-off-by: John Faith <jfaith@impinj.com>
[Thomas:
 - keep using "config", a "menuconfig" for just three sub-options is
   not relevant
 - move the BR2_PACKAGE_CIVETWEB_LIB option near the existing
   BR2_PACKAGE_CIVETWEB_SERVER option, since both allow to select what
   should be built/installed
 - remove BR2_PACKAGE_CIVETWEB_SHARED_LIB, the .mk file will use
   BR2_STATIC_LIBS/BR2_SHARED_LIBS/BR2_STATIC_SHARED_LIBS to know what
   to do
 - select BR2_PACKAGE_CIVETWEB_SERVER if BR2_PACKAGE_CIVETWEB_LIB is
   not enabled to ensure at least the server *or* the library is
   selected
 - introduce CIVETWEB_BUILD_TARGETS in the .mk file to properly use
   the appropriate make targets to build the server, static library
   and/or shared library
 - cleanup the use of CIVETWEB_INSTALL_TARGETS, and use it for both
   target and staging installation
 - factorize common installation options into a CIVETWEB_INSTALL_OPTS
   variable that is used for both the target and staging installation]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>