Fix macOS build issue with recent commit

Add objc_args in meson when compiling to pass C defines also to
bundle_open.m.

Default "bundle" option to false to have by default a unix-like
build and install.

In the run-local script always expect that "bundle" option is to
false to have a unix-like install.

In the build-package script pass the -Dbundle=true option when
building on macos.

When setting the resouce path revert to original method using

[[NSBundle mainBundle] resourcePath]

to have the real resource path when the bundle option will be
activated. With the recent commit the function
set_macos_bundle_resources will be called only if the "bundle"
option is activate and is not used in unix-like mode.

scripts/run-local

@@ -47,10 +47,7 @@ if [[ "$OSTYPE" == "msys"* || "$OSTYPE" == "mingw"* ]]; then
 fi
 
 rundir=".run"
-if [[ "$OSTYPE" == "darwin"* ]]; then
-  bindir="$rundir"
-  datadir="$rundir"
-elif [ "$option_portable" == on ]; then
+if [ "$option_portable" == on ]; then
   bindir="$rundir"
   datadir="$rundir/data"
 else