like when main package depends on subpackages

-P lets user specify the REPODEST on cmd line

This allows ABUILDS to call the default_doc func and append stuff missing

- check that md5sums correspond to source
- warn if maintainer is missing

so far only option avaiable is !strip, which disables stripping of binaries.

The -r option will only install deps from system repo and fail if any is
missing.

The -R option will parse the aports tree and try build the missing packages
and then install the newly built package.

abuild [-c] -n PKGNAME[-PKGVER]
creates a directory with new APKBUILD. If -c is specified will sample init.d,
conf.d and install script be copied as well.

This reverts commit fe7da984.

Conflicts:

	abuild

by sourcing the functions.sh after abuild.conf

This will let user specify a directory where the repositories are.
Setting REPODEST will override PKGDEST.

try deal with dependencies for makedepends

Example.
foo-dev is a makedepends which depends on foo. We need to install foo before
we can install foo-dev.

The way we deal with thi here is hackish and should be replaced by adding
all built packages to an abuild repository or similar.

Also any /usr/share/gettext dir.

This reverts commit b27a6f47.