vdpm: add multiple packages installation

[scribam]

Before:

$ vdpm bzip2 zlib
Usage: ./vdpm package-name

After:

$ vdpm bzip2 zlib
find: ‘/tmp/vdpm_install_bzip2’: No such file or directory
Installing bzip2...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0include/
include/bzlib.h
lib/
lib/libbz2.a
100 25272  100 25272    0     0  34752      0 --:--:-- --:--:-- --:--:--  259k
success
find: ‘/tmp/vdpm_install_zlib’: No such file or directory
Installing zlib...
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
include/
include/zconf.h
include/zlib.h
lib/
lib/pkgconfig/
lib/libz.a
100 69436  100 69436    0     0    99k      0 --:--:-- --:--:-- --:--:--   99k
lib/pkgconfig/zlib.pc
share/
share/man/
share/man/man3/
share/man/man3/zlib.3
success

[d3m3vilurr]

LGTM :+1: