Build packages with pdpmake

[hovercats]

I wanna see if we could build all packages using make, with pdpmake.

• build with pdpmake --posix #5
• port pdpmake to oasis' buildsystem
• alsa-lib
• cmus
• exfatprogs
• expat
• ffmpeg
• fontconfig
• gnutls
• gperf
• icu
• lame
• libelf
• libffi
• libgcrypt
• libgpg-error
• libnghttp2
• libogg
• libpng
• libpsl
• libressl
• libtasn1
• libvorbis
• libvpx
• libwebp
• libxml2
• libxslt
• libyaml
• lua-filesystem
• lua5.1
• luajit
• luakit
• m4
• nettle
• opus
• pcre2
• perl
• python
• ruby
• sqlite
• unifdef
• zlib