Don't use readlink to find gdb's location.

readlink isn't in POSIX, and the one available in on OS X does not
support the -f option. Use $(cd $(dirname $0) && pwd) instead.

Bug: http://b/24776250
Change-Id: Ic68d9ea50a06c230cb514909513400534d3f3ee1
1 file changed
tree: bc0a231ceec8b0fa066718d94ac4a5f3c5a9add8
  1. bin/
  2. include/
  3. lib/
  4. share/