Update internal/modified/stripped version of boost.preprocessor to 1.86.0.

Passes:
```
rm -rf /src/firebird/src/include/firebird/impl/boost
bcp boost/preprocessor/seq/for_each_i.hpp /src/firebird/src/include/firebird/impl
find /src/firebird/src/include/firebird/impl/ -name "*.hpp" -o -name "*.h" | xargs sed -i 's/BOOST_PREPROCESSOR_/FB_BOOST_PREPROCESSOR_/g'
find /src/firebird/src/include/firebird/impl/ -name "*.hpp" -o -name "*.h" | xargs sed -i 's/BOOST_PP_/FB_BOOST_PP_/g'
find /src/firebird/src/include/firebird/impl/ -name "*.hpp" -o -name "*.h" | xargs sed -i 's|include <boost/|include <firebird/impl/boost/|g'
```

Author: asfernandes

src/include/firebird/impl/boost/preprocessor/arithmetic/dec.hpp

@@ -8,6 +8,7 @@
 #  */
 #
 # /* Revised by Paul Mensonides (2002) */
+# /* Revised by Edward Diener (2020) */
 #
 # /* See http://www.boost.org for most recent version. */
 #
@@ -16,6 +17,8 @@
 #
 # include <firebird/impl/boost/preprocessor/config/config.hpp>
 #
+# if ~FB_BOOST_PP_CONFIG_FLAGS() & FB_BOOST_PP_CONFIG_STRICT()
+#
 # /* FB_BOOST_PP_DEC */
 #
 # if ~FB_BOOST_PP_CONFIG_FLAGS() & FB_BOOST_PP_CONFIG_MWCC()
@@ -284,5 +287,36 @@
 # define FB_BOOST_PP_DEC_254 253
 # define FB_BOOST_PP_DEC_255 254
 # define FB_BOOST_PP_DEC_256 255
+# define FB_BOOST_PP_DEC_257 256
+#
+# else
+#
+# /* FB_BOOST_PP_DEC */
+#
+# if ~FB_BOOST_PP_CONFIG_FLAGS() & FB_BOOST_PP_CONFIG_MWCC()
+#    define FB_BOOST_PP_DEC(x) FB_BOOST_PP_DEC_I(x)
+# else
+#    define FB_BOOST_PP_DEC(x) FB_BOOST_PP_DEC_OO((x))
+#    define FB_BOOST_PP_DEC_OO(par) FB_BOOST_PP_DEC_I ## par
+# endif
+#
+# define FB_BOOST_PP_DEC_I(x) FB_BOOST_PP_DEC_ ## x
+#
+# include <firebird/impl/boost/preprocessor/config/limits.hpp>
+#
+# if FB_BOOST_PP_LIMIT_MAG == 256
+# include <firebird/impl/boost/preprocessor/arithmetic/limits/dec_256.hpp>
+# elif FB_BOOST_PP_LIMIT_MAG == 512
+# include <firebird/impl/boost/preprocessor/arithmetic/limits/dec_256.hpp>
+# include <firebird/impl/boost/preprocessor/arithmetic/limits/dec_512.hpp>
+# elif FB_BOOST_PP_LIMIT_MAG == 1024
+# include <firebird/impl/boost/preprocessor/arithmetic/limits/dec_256.hpp>
+# include <firebird/impl/boost/preprocessor/arithmetic/limits/dec_512.hpp>
+# include <firebird/impl/boost/preprocessor/arithmetic/limits/dec_1024.hpp>
+# else
+# error Incorrect value for the FB_BOOST_PP_LIMIT_MAG limit
+# endif
+#
+# endif
 #
 # endif

src/include/firebird/impl/boost/preprocessor/arithmetic/inc.hpp

@@ -8,6 +8,7 @@
 #  */
 #
 # /* Revised by Paul Mensonides (2002) */
+# /* Revised by Edward Diener (2020) */
 #
 # /* See http://www.boost.org for most recent version. */
 #
@@ -16,6 +17,8 @@
 #
 # include <firebird/impl/boost/preprocessor/config/config.hpp>
 #
+# if ~FB_BOOST_PP_CONFIG_FLAGS() & FB_BOOST_PP_CONFIG_STRICT()
+#
 # /* FB_BOOST_PP_INC */
 #
 # if ~FB_BOOST_PP_CONFIG_FLAGS() & FB_BOOST_PP_CONFIG_MWCC()
@@ -285,4 +288,34 @@
 # define FB_BOOST_PP_INC_255 256
 # define FB_BOOST_PP_INC_256 256
 #
+# else
+#
+# /* FB_BOOST_PP_INC */
+#
+# if ~FB_BOOST_PP_CONFIG_FLAGS() & FB_BOOST_PP_CONFIG_MWCC()
+#    define FB_BOOST_PP_INC(x) FB_BOOST_PP_INC_I(x)
+# else
+#    define FB_BOOST_PP_INC(x) FB_BOOST_PP_INC_OO((x))
+#    define FB_BOOST_PP_INC_OO(par) FB_BOOST_PP_INC_I ## par
+# endif
+#
+# define FB_BOOST_PP_INC_I(x) FB_BOOST_PP_INC_ ## x
+#
+# include <firebird/impl/boost/preprocessor/config/limits.hpp>
+#
+# if FB_BOOST_PP_LIMIT_MAG == 256
+# include <firebird/impl/boost/preprocessor/arithmetic/limits/inc_256.hpp>
+# elif FB_BOOST_PP_LIMIT_MAG == 512
+# include <firebird/impl/boost/preprocessor/arithmetic/limits/inc_256.hpp>
+# include <firebird/impl/boost/preprocessor/arithmetic/limits/inc_512.hpp>
+# elif FB_BOOST_PP_LIMIT_MAG == 1024
+# include <firebird/impl/boost/preprocessor/arithmetic/limits/inc_256.hpp>
+# include <firebird/impl/boost/preprocessor/arithmetic/limits/inc_512.hpp>
+# include <firebird/impl/boost/preprocessor/arithmetic/limits/inc_1024.hpp>
+# else
+# error Incorrect value for the FB_BOOST_PP_LIMIT_MAG limit
+# endif
+#
+# endif
+#
 # endif