7842 - new directory organization

Baremetal is now the default build target and therefore has its sources
at the top-level. Baremetal programs build using the phase-2 Mu toolchain
that requires a Linux kernel. This phase-2 codebase which used to be at
the top-level is now under the linux/ directory. Finally, the phase-2 toolchain,
while self-hosting, has a way to bootstrap from a C implementation, which
is now stored in linux/bootstrap. The bootstrap C implementation uses some
literate programming tools that are now in linux/bootstrap/tools.

So the whole thing has gotten inverted. Each directory should build one
artifact and include the main sources (along with standard library). Tools
used for building it are relegated to sub-directories, even though those
tools are often useful in their own right, and have had lots of interesting
programs written using them.

A couple of things have gotten dropped in this process:
  - I had old ways to run on just a Linux kernel, or with a Soso kernel.
    No more.
  - I had some old tooling for running a single test at the cursor. I haven't
    used that lately. Maybe I'll bring it back one day.

The reorg isn't done yet. Still to do:
  - redo documentation everywhere. All the README files, all other markdown,
    particularly vocabulary.md.
  - clean up how-to-run comments at the start of programs everywhere
  - rethink what to do with the html/ directory. Do we even want to keep
    supporting it?

In spite of these shortcomings, all the scripts at the top-level, linux/
and linux/bootstrap are working. The names of the scripts also feel reasonable.
This is a good milestone to take stock at.

1 files changed, 0 insertions, 76 deletions

diff --git a/mu.vim b/mu.vim
deleted file mode 100644
index ba93a196..00000000
--- a/mu.vim
+++ /dev/null
@@ -1,76 +0,0 @@
-" Vim syntax file
-" Language:    mu
-" Maintainer:  Kartik Agaram <mu@akkartik.com>
-" URL:         http://github.com/akkartik/mu
-" License:     public domain
-"
-" Copy this file into your ftplugin directory, and add the following to your
-" vimrc or to .vim/ftdetect/mu.vim:
-"   autocmd BufReadPost,BufNewFile *.mu set filetype=mu
-"
-" Some highlight groups you might want to select colors for in your vimrc:
-"   muFunction
-"   muTest
-
-let s:save_cpo = &cpo
-set cpo&vim
-
-" todo: why does this periodically lose syntax, like on file reload?
-"   $ vim x.mu
-"   :e
-"? if exists("b:syntax")
-"?   finish
-"? endif
-"? let b:syntax = "mu"
-
-setlocal iskeyword=@,48-57,?,!,_,$,-
-setlocal formatoptions-=t  " Mu programs have long lines
-setlocal formatoptions+=c  " but comments should still wrap
-
-syntax match muSalientComment /##.*$/  | highlight link muSalientComment SalientComment
-syntax match muComment /#\( \.\|? \)\@!.*/ | highlight link muComment Comment
-syntax match muS1Comment /# \..*/ | highlight link muS1Comment Comment
-syntax match muS2Comment /# \. \..*/ | highlight link muS2Comment Comment
-
-set comments+=n:#
-syntax match muCommentedCode "#? .*"  | highlight link muCommentedCode CommentedCode
-let b:cmt_head = "#? "
-
-syntax match muDelimiter "[{}]"  | highlight link muDelimiter Delimiter
-
-" Mu literals
-syntax match muLiteral %\<-\?[0-9][0-9A-Fa-f]*\>%
-syntax match muLiteral %\<-\?0x[0-9A-Fa-f]\+\>%
-syntax match muLiteral %"[^"]*"%
-highlight link muLiteral Constant
-syntax match muError %\<[0-9][0-9A-Fa-f]*[^0-9A-Fa-f]\>%
-highlight link muError Error
-
-" sources of action at a distance
-syntax match muAssign "<-"
-highlight link muAssign SpecialChar
-syntax keyword muAssign error
-highlight link muAssign Special
-
-" common keywords
-syntax match muControl "\<return\>\|\<return-if[^ ]*\>"
-syntax match muControl "\<jump\>\|\<jump-if[^ ]*"
-syntax match muControl "\<break\>\|\<break-if[^ ]*"
-syntax match muControl "\<loop\>\|\<loop-if[^ ]*"
-highlight link muControl PreProc
-
-syntax match muKeyword " -> "
-syntax keyword muKeyword fn sig type var
-highlight link muKeyword PreProc
-
-syntax match muFunction "\(fn\s\+\)\@<=\(\S\+\)"
-highlight link muFunction Identifier
-
-syntax match muTest "\(fn\s\+\)\@<=\(test-\S\+\)"
-highlight link muTest Identifier
-
-syntax match muData "^type\>"
-syntax match muData "\<eax\>\|\<ecx\>\|\<edx\>\|\<ebx\>\|\<esi\>\|\<edi\>\|\<xmm[0-7]\>"
-highlight link muData Constant
-
-let &cpo = s:save_cpo