Explicitly depend on mpc1. Our generated gcc aports use the !tracedeps
option, so we need to explicitly set the libraries it depends on.
This has mostly not been an issue, as we are installing our gcc
packages together with Alpine's gcc package, which causes the libraries
to get installed anyway.
Related: pmaports#236
test_aportgen.py fails because some test data is missing.
Make the test pass by fixing the test data with the following changes:
- Update testdata pmaports/cross/*
- Don't git ignore test/testdata/aportgen directory
- Add testdata aports/main/* from upstream Alpine Linux aports
Patch files in pmaports/cross/binutils-armhf were removed, as they are
not needed to test the pmbootstrap code.