Some packages have issues with parallel builds and need to set
TERMUX_MAKE_PROCESSES=1. All other build variables that package
recipes set are prefixed with TERMUX_PKG, use that for MAKE_PROCESSES
as well for consistency.
%ci:no-build
* Rename main package to binutils-libs
* Install executables into libexec/binutils/
* Create subpackage binutils-bin not conflicting with binutils-is-llvm
- binutils-bin contains symlinks bin/{as,elfedit,gprof,ld.bfd}
* Make binutils essentially a metapackage only containing symlinks