implemented --dynlibOverride option for static linking of 'dynlib'

doc/advopt.txt

@@ -70,6 +70,11 @@ Advanced options:
   --putenv:key=value        set an environment variable
   --babelPath:PATH          add a path for Babel support
   --excludePath:PATH        exclude a path from the list of search paths
+  --dynlibOverride:SYMBOL   marks SYMBOL so that dynlib:SYMBOL
+                            has no effect and can be statically linked instead;
+                            symbol matching is fuzzy so
+                            that --dynlibOverride:lua matches 
+                            dynlib: "liblua.so.3"
   --listCmd                 list the commands used to execute external programs
   --parallelBuild=0|1|...   perform a parallel build
                             value = number of processors (0 for auto-detect)