Introduce Open Dynamics Engine examples

Changed the regular expressions that removes comments in convert_swig to
try and handle C style comments found in multiline #define statements.

Also added a TRICK_ICG_NOCOMMENT line to SIM_ode to stop ICG from
trying to process non-Trick comments in the ODE directory.

refs #172

libexec/trick/convert_swig

@@ -218,8 +218,9 @@ sub process_file() {
         $raw_contents = <IN_FILE> ;
 
         # remove all comments, they can cause all kinds of trouble
-        # leave the line continuation character if present in a c++ style comment.
-        $raw_contents =~ s/\/\*(?:.*?)\*\/|\/\/(?:.*?)(\\)?(\n)/$1\n/sg ;
+        # leave the line continuation character if present
+        $raw_contents =~ s/\/\*(?:.*?)\*\/(\s*\\\n)?/$1/sg ;
+        $raw_contents =~ s/\/\/(?:.*?)(\\)?(\n)/$1\n/sg ;
 
 ##      The init_attr functions cause problems when we try and wrap them with SWIG.
 ##      We can safely remove them from the header files.

trick_sims/SIM_ode/S_overrides.mk

@@ -2,6 +2,7 @@
 ODE_HOME = /users/alin/ode-0.14
 
 TRICK_ICG_EXCLUDE = ${ODE_HOME}/ode/src/array.h:${ODE_HOME}/ode/src/threading_base.h
+TRICK_ICG_NOCOMMENT = ${ODE_HOME}
 TRICK_SWIG_EXCLUDE = ${ODE_HOME}
 
 TRICK_CFLAGS += -I${TRICK_HOME}/trick_models -I${ODE_HOME}/include -I${ODE_HOME}