makepkg: improve check and error message for buildfile location

The documentation very clearly states that the buildfile has to be in
$PWD, but the error thrown by makepkg reference some mysterious "build
directory". Simplify this check so that we more directly check that the
file being referred to is in fact in our $PWD. Revise the error message
when the check fails to more plainly point out the problem.

Signed-off-by: Allan McRae <allan@archlinux.org>

0 files changed, 0 insertions, 0 deletions