Description: On line 45, the variable `mods` "mods=("$kdir/extramodules"{drv,netadp,netflt,pci}.ko*)" fails to expand to where virtualbox's modules are located. It should read "mods=("$kdir/extramodules"/vbox{drv,netadp,netflt,pci}.ko*)".
Also line 49, "rmdir -p --ignore-fail-on-non-empty "$kdir/extramodules" 2>/dev/null;" (not sure if this use to not always be the case) extramodules is a symlink, so rmdir fails to remove it.


Additional info:
* package version(s)
virtualbox-source 4.1.18-2

Steps to reproduce:
1) # mkdir /usr/lib/modules/{2.6.1-ARCH,extramodules-2.6-ARCH}
2) # ln -s /usr/lib/modules/extramodules-2.6-ARCH /usr/lib/modules/2.6.1-ARCH/extramodules
3) # copy some vbox modules(or any files with the right names) that are already built into /usr/lib/modules/extramodules-2.6-ARCH
4) # bash -x /usr/bin/vboxbuild
5) # look at what the mod variable expands to. The rmdir is being redirected into /dev/null so the error of it telling you extramodules isn't a directory, isn't shown.