Ein kommoder Wrapper um apk auf alpinelinux

a wrapper to abuild, does what we want w/o modifying abuild

Example call:

apkg add <PKGNAME1> <PKGNAME2>         - find and copy to SPATH     PKGs <PKGNAME1 PKGNAME2> from PKG/{main,testing,community}
apkg build <PKGNAME1> <PKGNAME2>       - build                      PKGs <PKGNAME1 PKGNAME2> from any place
apkg build                             - build                      PKG from this here path
apkg install <PKGNAME1> <PKGNAME2>     - build and install(upgrade) PKGs <PKGNAME1 PKGNAME2> from any place
apkg clean <PKGNAME1> <PKGNAME2>       - clean temp build files of  PKGs <PKGNAME1 PKGNAME2> from any place
apkg cleanoldPKG <PKGNAME1> <PKGNAME2> - clean older versions than  current from repo
apkg init <PKGNAME1> <PKGNAME2>        - init                       PKGs <PKGNAME1 PKGNAME2> from any place