python,python3: merge package install scripts

The only difference just a parameter for Python3
[ -b to compile bytecodes in legacy mode ].
No need to keep 2 almost identical files now
that they're exported.

I'm a bit scared of that param, since it may get
removed at some point.
But let's see until then.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

lang/python/python-package-install.sh

@@ -35,11 +35,12 @@ process_filespec() {
 	)
 }
 
-src_dir="$1"
-dst_dir="$2"
-python="$3"
-mode="$4"
-filespec="$5"
+ver="$1"
+src_dir="$2"
+dst_dir="$3"
+python="$4"
+mode="$5"
+filespec="$6"
 
 process_filespec "$src_dir" "$dst_dir" "$filespec" || {
 	echo "process filespec error-ed"
@@ -58,13 +59,16 @@ if [ "$mode" == "sources" ] ; then
 	exit 0
 fi
 
+legacy=
+[ "$ver" == "3" ] && legacy="-b"
+
 # XXX [So that you won't goof as I did]
 # Note: Yes, I tried to use the -O & -OO flags here.
 #       However the generated byte-codes were not portable.
 #       So, we just stuck to un-optimized byte-codes,
 #       which is still way better/faster than running
 #       Python sources all the time.
-$python -m compileall -d '/' $dst_dir || {
+$python -m compileall $legacy -d '/' $dst_dir || {
 	echo "python -m compileall err-ed"
 	exit 1
 }