veyron2/vlog: get rid of -vv flag, use --vmodule=*=2 instead.

Change-Id: I5a6190dcd00b9c0ea235bdaab6961542e77562dd
diff --git a/tools/build/doc.go b/tools/build/doc.go
index 9d7fc7e..347c55a 100644
--- a/tools/build/doc.go
+++ b/tools/build/doc.go
@@ -13,49 +13,76 @@
 Run "build help [command]" for command usage.
 
 The global flags are:
-   -alsologtostderr=true: log to standard error as well as files
-   -log_backtrace_at=:0: when logging hits line file:N, emit a stack trace
-   -log_dir=: if non-empty, write log files to this directory
-   -logtostderr=false: log to standard error instead of files
-   -max_stack_buf_size=4292608: max size in bytes of the buffer to use for logging stack traces
-   -stderrthreshold=2: logs at or above this threshold go to stderr
-   -v=0: log level for V logs
-   -vmodule=: comma-separated list of pattern=N settings for file-filtered logging
-   -vv=0: log level for V logs
+ -alsologtostderr=true
+   log to standard error as well as files
+ -log_backtrace_at=:0
+   when logging hits line file:N, emit a stack trace
+ -log_dir=
+   if non-empty, write log files to this directory
+ -logtostderr=false
+   log to standard error instead of files
+ -max_stack_buf_size=4292608
+   max size in bytes of the buffer to use for logging stack traces
+ -stderrthreshold=2
+   logs at or above this threshold go to stderr
+ -v=0
+   log level for V logs
+ -veyron.credentials=
+   directory to use for storing security credentials
+ -veyron.namespace.root=[/proxy.envyor.com:8101]
+   local namespace root; can be repeated to provided multiple roots
+ -veyron.vtrace.cache_size=1024
+   The number of vtrace traces to store in memory.
+ -veyron.vtrace.dump_on_shutdown=false
+   If true, dump all stored traces on runtime shutdown.
+ -veyron.vtrace.sample_rate=0
+   Rate (from 0.0 to 1.0) to sample vtrace traces.
+ -vmodule=
+   comma-separated list of pattern=N settings for file-filtered logging
 
 Build Build
 
-Build veyron Go packages using a remote build server. The command
-collects all source code files that are not part of the Go standard
-library that the target packages depend on, sends them to a build
-server, and receives the built binaries.
+Build veyron Go packages using a remote build server. The command collects all
+source code files that are not part of the Go standard library that the target
+packages depend on, sends them to a build server, and receives the built
+binaries.
 
 Usage:
    build build [flags] <name> <packages>
 
-<name> is a veyron object name of a build server
-<packages> is a list of packages to build, specified as arguments for
-each command. The format is similar to the go tool.  In its simplest
-form each package is an import path; e.g. "veyron/tools/build". A
-package that ends with "..." does a wildcard match against all
-packages with that prefix.
+<name> is a veyron object name of a build server <packages> is a list of
+packages to build, specified as arguments for each command. The format is
+similar to the go tool.  In its simplest form each package is an import path;
+e.g. "veyron/tools/build". A package that ends with "..." does a wildcard match
+against all packages with that prefix.
 
-The build flags are:
-   -arch=amd64: Target architecture.
-   -os=linux: Target operating system.
+The build build flags are:
+ -arch=amd64
+   Target architecture.
+ -os=darwin
+   Target operating system.
 
 Build Help
 
 Help with no args displays the usage of the parent command.
+
 Help with args displays the usage of the specified sub-command or help topic.
+
 "help ..." recursively displays help for all commands and topics.
 
+The output is formatted to a target width in runes.  The target width is
+determined by checking the environment variable CMDLINE_WIDTH, falling back on
+the terminal width from the OS, falling back on 80 chars.  By setting
+CMDLINE_WIDTH=x, if x > 0 the width is x, if x < 0 the width is unlimited, and
+if x == 0 or is unset one of the fallbacks is used.
+
 Usage:
    build help [flags] [command/topic ...]
 
 [command/topic ...] optionally identifies a specific sub-command or help topic.
 
-The help flags are:
-   -style=text: The formatting style for help output, either "text" or "godoc".
+The build help flags are:
+ -style=text
+   The formatting style for help output, either "text" or "godoc".
 */
 package main