This reverts commit b7d8c6188986f62573b9516fe27fdd0c7df1aaf9. And
This reverts commit 2d40f179124f874aca4cf1145fdbc42fb8fb17f3.
It caused a build failure i'll need to reproduce.
` error: could not convert ‘Rule’ from ‘llvm::Regex’ to ‘llvm::Expected<llvm::Regex>’`
InstallAPI takes a json list of headers that is typically generated from
a build system like Xcode based on a project's attributes. Sometimes,
maintainers may want to alter this for tapi input. Using e.g.
`--extra-public-headers`, users can manipulate what headers will be used
for TBD file generation.
When given a directory input `llvm-readtapi` traverses through the
directory to find dylibs or tbd files to operate on. TBD files will be
created with the same base file name as the dylib. Symlinks should be
created if the input is one.
This also introduces options to delete input files which are defined as
library files that existed before `readtapi -stubify` was invoked. Also
the ability to delete private libraries where private libraries are in a
predefined file system locations on darwin based platforms.
Stubify broadly takes either tbd files or binary dylibs and turns them
into tbd files. In future patches, stubify will also allow additional
information to be embedded into the final TBD output too.
Add Util APIs to TextAPI for common operations used by readtapi for now.
