Remove pkg/glob from the repo.

pkg/glob/README.md

Index: pkg/glob/README.md
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-`glob` is a file and directory globbing library that supports both checking
-whether a path matches a glob and listing all entities that match a glob.
-
-A "glob" is a pattern designed specifically to match files and directories. Most
-shells support globs natively.
-
-## Usage
-
-To construct a glob, just use `new Glob()`. As with `RegExp`s, it's a good idea
-to keep around a glob if you'll be using it more than once so that it doesn't
-have to be compiled over and over. You can check whether a path matches the glob
-using `Glob.matches()`:
-
-```dart
-import 'package:glob/glob.dart';
-
-final dartFile = new Glob("**.dart");
-
-// Print all command-line arguments that are Dart files.
-void main(List<String> arguments) {
-  for (var argument in arguments) {
-    if (dartFile.matches(argument)) print(argument);
-  }
-}
-```
-
-You can also list all files that match a glob using `Glob.list()` or
-`Glob.listSync()`:
-
-```dart
-import 'package:glob/glob.dart';
-
-final dartFile = new Glob("**.dart");
-
-// Recursively list all Dart files in the current directory.
-void main(List<String> arguments) {
-  for (var entity in dartFile.listSync()) {
-    print(entity.path);
-  }
-}
-```
-
-## Syntax
-
-The glob syntax hews closely to the widely-known Bash glob syntax, with a few
-exceptions that are outlined below.
-
-In order to be as cross-platform and as close to the Bash syntax as possible,
-all globs use POSIX path syntax, including using `/` as a directory separator
-regardless of which platform they're on. This is true even for Windows roots;
-for example, a glob matching all files in the C drive would be `C:/*`.
-
-### Match any characters in a filename: `*`
-
-The `*` character matches zero or more of any character other than `/`. This
-means that it can be used to match all files in a given directory that match a
-pattern without also matching files in a subdirectory. For example, `lib/*.dart`
-will match `lib/glob.dart` but not `lib/src/utils.dart`.
-
-### Match any characters across directories: `**`
-
-`**` is like `*`, but matches `/` as well. It's useful for matching files or
-listing directories recursively. For example, `lib/**.dart` will match both
-`lib/glob.dart` and `lib/src/utils.dart`.
-
-If `**` appears at the beginning of a glob, it won't match absolute paths or
-paths beginning with `../`. For example, `**.dart` won't match `/foo.dart`,
-although `/**.dart` will. This is to ensure that listing a bunch of paths and
-checking whether they match a glob produces the same results as listing that
-glob. In the previous example, `/foo.dart` wouldn't be listed for `**.dart`, so
-it shouldn't be matched by it either.
-
-This is an extension to Bash glob syntax that's widely supported by other glob
-implementations.
-
-### Match any single character: `?`
-
-The `?` character matches a single character other than `/`. Unlike `*`, it
-won't match any more or fewer than one character. For example, `test?.dart` will
-match `test1.dart` but not `test10.dart` or `test.dart`.
-
-### Match a range of characters: `[...]`
-
-The `[...]` construction matches one of several characters. It can contain
-individual characters, such as `[abc]`, in which case it will match any of those
-characters; it can contain ranges, such as `[a-zA-Z]`, in which case it will
-match any characters that fall within the range; or it can contain a mix of
-both. It will only ever match a single character. For example,
-`test[a-zA-Z_].dart` will match `testx.dart`, `testA.dart`, and `test_.dart`,
-but not `test-.dart`.
-
-If it starts with `^` or `!`, the construction will instead match all characters
-*not* mentioned. For example, `test[^a-z].dart` will match `test1.dart` but not
-`testa.dart`.
-
-This construction never matches `/`.
-
-### Match one of several possibilities: `{...,...}`
-
-The `{...,...}` construction matches one of several options, each of which is a
-glob itself. For example, `lib/{*.dart,src/*}` matches `lib/glob.dart` and
-`lib/src/data.txt`. It can contain any number of options greater than one, and
-can even contain nested options.
-
-This is an extension to Bash glob syntax, although it is supported by other
-layers of Bash and is often used in conjunction with globs.
-
-### Escaping a character: `\`
-
-The `\` character can be used in any context to escape a character that would
-otherwise be semantically meaningful. For example, `\*.dart` matches `*.dart`
-but not `test.dart`.
-
-### Syntax errors
-
-Because they're used as part of the shell, almost all strings are valid Bash
-globs. This implementation is more picky, and performs some validation to ensure
-that globs are meaningful. For instance, unclosed `{` and `[` are disallowed.
-
-### Reserved syntax: `(...)`
-
-Parentheses are reserved in case this package adds support for Bash extended
-globbing in the future. For the time being, using them will throw an error
-unless they're escaped.