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This patch allows all our development scripts, as well as ndk-gdb
to work well when parameters containing spaces are used.

The $@ shell variable is very special because it will expand
differently if inside a quoted string. What this means is that,
while $@ normally corresponds to the list of all parameters to
a function or script, we have:

  $@   -> expands to a single string
  "$@" -> expands to a series of strings

This is important when using them as parameters to other commands
for example consider:

  # Simple function to dump all parameters, one per line.
  dump () {
     for ITEM; do
        echo "$ITEM"
     done
  }

  dump1 () {   # this will always print a single line
      dump $@
  }

  dump2 () {   # this will print one line per item
      dump "$@"
  }

  dump1 aaa bbb ccc      # prints "aaa bbb ccc" on a single line
  dump2 aaa bbb ccc      # prints three lines: "aaa", "bbb" and "ccc"

Generally speaking, one should always use "$@" except in very rare cases
(e.g. when called from an eval command).

Change-Id: I87ec2a7b078cbe463f0ec0257ecad8fd38835b2e