Add arch_variant to the genrule srcs property so that cc_genrule
modules can vary the srcs and outs by architecture.
Test: cc/genrule_test.go
Change-Id: Idb17013e137d7ca21ca4cfc3e4c1fa7d89977043
There was no way to select a single source file from a genrule that
has multiple source files. Make Soong's genrule closer to Bazel
by supporting $(location) for input and outputs. Change the
label used for tools referenced through filegroups to the name
of the module instead of the name of the file, which means it
matches the string used in the tools property.
Also support :module format in the tools property in preparation
for deprecating the tool_files property and putting both files
and modules in the tools property.
Bug: 117354232
Test: genrule_test.go
Change-Id: Id31a4ac4ff7064076a576c1d8ffeb7c19fc6b9a4
Merged-In: Id31a4ac4ff7064076a576c1d8ffeb7c19fc6b9a4
(cherry picked from commit 098d22b5f6)
